The new map is based on detailed GIS mapping work, and is searchable by zip code, so higher elevation areas in East Portland and in the West Hills map out with different zones than, say, inner Southeast Portland, where I live – which now maps out at Zone 9A (with average winter lows of 20-25F). Just make sure to consider it an annual. Oregon zones are expansive and include zones 4b through 9b. Each zone consists of an entire census tract, as established for the decennial U.S. Census. Statewide, the dry months are July and August, when moisture arrives during afternoon thunderstorms, mainly in the mountains, and less often from storms that reach the north coast and adjacent counties. The USDA plant hardiness zone schema was rebuilt in 2012 with the help of researchers from Oregon State University. The climate is different in all the countries in the world. We’ve made progress, but there’s still more to do. However, even in Portland, it can be difficult to figure out which plants will succeed, and which ones will not make it through our long rainy season. Portland averages 3 inches of snow per year. Located 110 miles from the Pacific Ocean, Portland lies between two mountain ranges, the Cascade Range to the east and the lower Coast Range to the west, in the Willamette River valley, one of the world's most fertile river valleys. And let’s not forget, even the best gardeners will lose a few plants over the course of their gardening career, even ones that supposedly should do just fine in our climate—so you may as well choose to plant the ones that you love! Compared to Seattle and Vancouver, Portland is both warmer and drier all year round. The Portland lies on 10m above sea level The climate here is mild, and generally warm and temperate. What zone is Portland in? There are dozens of perennials and shrubs that do well here. In addition, the Cascades, running north–south from border to border, generally retain relatively warm Pacific air masses on the western side of the state and relatively cool continental air masses on the eastern side. Eastern Oregon falls into the cold semi-arid climate (or BSk type), which features drier weather. We discuss climate zones and hardiness zones, two measuring sticks that green thumbs use to categorize which plants will thrive where. On the other hand, most winter precipitation in the Coast Range falls as rain, though heavy snow sometimes occurs. Climate information for Eugene Oregon including average temperature, rain and snowfall totals The US average is 28 inches of snow per year. Brown Patches – Common causes and what to do about them. Climate Zone 4C is defined as Mixed – Marine with IP Units 3600 < HDD65ºF ≤ 5400 and SI Units 2000 < HDD18ºC ≤ 3000 . Precipitation is less in the months between winter and summer: April through June in the spring and September and October in the fall. Why winter is the best time to plan your summer yard. For the love of color and texture – hardscapes that wow! The climate here is mild, and generally warm and temperate. [2], In the Willamette Valley east of the Coast Range, storms "blowing" from the Pacific retain enough moisture to drop from 35 to 45 inches (890 to 1,140 mm) annually in the most heavily populated part of the state. The winters are rainier than the summers in Portland. It lies in the Pacific Northwest part of America, within the state of Oregon, at the confluence of the Columbia and Willamette rivers. Nothing beats gardening experience for intuiting which plants will survive winter, and which will not. Zone 6. Sunset Hardiness Zones are different. Eastern Oregon falls into the cold semi-arid climate (or BSk type), which features drier weather. • Witch Hazel. We also touch on which plants thrive in Portland. USDA Plant Hardiness Maps may be used to determine if a plant is expected to survive winter in your given hardiness zone. Annual Weather Averages Near Portland. Averages are for Portland International Airport, which is 7 miles from Portland. After all, you may luck out and Portland will have a particularly mild winter that your new plant will make it through just fine. Zone 9b: 25°F to 30°F: Oregon City: Zone 8b: 15°F to 20°F: Otis: Zone 8b: 15°F to 20°F: … Portland (/ ˈ p ɔːr t l ə n d /, PORT-lənd) is the largest and most populous city in the U.S. state of Oregon and the seat of Multnomah County.It is a major port in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia rivers in Northwestern Oregon. CLIMATE ZONES SECTION 301 CLIMATE ZONES 301.1 General. The following places are categorized as class 4C climate zones: Benton County, Oregon: Energy Resources The Rose City is well known for its greenery, and many plant species thrive here. Produced by Sunset Gardening Magazine, Sunset Hardiness Zone Maps tend to be significantly more detailed than the USDA plant hardiness zones because they include more factors, including elevation, humidity, latitude, ocean influence, microclimates, and more. Snow depths, which vary with elevation and time of year, average an estimated 50 to 100 inches (130 to 250 cm) in the Cascades and 25 to 65 inches (64 to 165 cm) in the Blue Mountains at the end of January; by the end of April, they diminish to 40 to 120 inches (100 to 300 cm) in the Cascades and 5 to 45 inches (13 to 114 cm) in the Blues. According to the ICH guidelines for stability studies, the climate of the world is divided into five different zones. Average monthly Rainfall, Sunshine, Temperatures. The US average is 38 inches of rain per year. Let’s take a look at both of these systems. • Butterfly Bushes • Hydrangeas On average, there are 144 sunny days … The US average is 28 inches of snow per year. 33.445 Historic Resource Protection Overlay Zone; 33.450 Light Rail Transit Station Zone; 33.453 Interim Forest Review; 33.455 Main Street Node Overlay Zone; 33.460 Main Street Corridor Overlay Zone; 33.465 Pleasant Valley Natural Resources Overlay Zone; 33.470 Portland International Airport Noise Impact Zone; 33.471 Prime Industrial Overlay Zone [3], Annual snowfall along the coastal plain averages 1 to 3 inches (2.5 to 7.6 cm) a year, including years with none. • Blueberries Portland weather averages and climate Portland, Oregon. [6] The temperature in the Willamette Valley is mild compared to the desert regions of the state, with high temperatures at or above 90 °F (32 °C) occurring only five to fifteen times per year, and low temperatures below 30 °F (−1 °C) similarly infrequent. About 1001 mm | 39.4 inch of precipitation falls annually. Portland, Oregon gets 43 inches of rain, on average, per year. Portland landscaping experts know that our locale is a gardener’s paradise. Coniferous and deciduous trees of all sizes and shapes grow here, including Alders, Birches, Beeches, Pines, Douglas Firs, and Cedars. [6] The lowest occurred on February 9, 1933, in Ukiah, and again on February 10, 1933, in Seneca, also both east of the Cascades, when the temperature dropped to −54 °F (−48 °C). [5], Snowfall in Oregon is greatest in the Cascade Range. Portland (and the entire Willamette Valley) is in Zone 6 according to the Sunset rating system. Gardeners in this zone enjoy a long growing season (from mid-March to mid-November), but they also experience the possibility of cold snaps and/or long winters. Portland (and the entire Willamette Valley) is in Zone 6 according to the Sunset rating system. For more advice on which plants shine in Portland’s climate, give us a call! The plateau area of central and southeastern Oregon has climatic characteristics similar to the north-central plateau except for somewhat less precipitation and lower temperatures at higher elevations. What happened to my lawn? The Blue-Wallowa mountains have climates that vary with location. • Geraniums The climate summary for this page is based on data from the Global Summary of the Day and is based on weather observations between May 1936 through to December 2012 at Portland International, Portland, Oregon . Although Portland temperatures are mild for most months of the year, we do see freezing temperatures that may last several weeks. • Coreopsis • Ferns • Coral Bells • Hostas It is interesting to note that the 2012 updated version of the USDA hardiness zone map reflects a trend of overall warmer temperatures since 1975. Portland is in Zone 6 according to the Sunset hardiness system. Climate and average weather for Portland (Oregon), United States of America displayed in graphs. Light Up Your Nightscape with Smart Outdoor Lighting. As humid ocean air flows east from the ocean and encounters the Coast Range, it rises steeply, cools, and loses moisture through condensation, which produces heavy rain. It is interesting to note that the 2012 updated version of the USDA … [8] The hottest area of the state is the southwest; Jackson County is the warmest place in the state during summer. To plant or not to plant is often the question for gardeners. Many Portland gardeners let experience guide them—if something does not work, they either strike that species from their shopping list, or they treat it as an annual in following seasons. HOA Maintenance, Serving the greater portland metropolitan area: Landscape East & West, LCB #8697 - CCB #181577, WA #LANDSEW877JT © 2021 Landscape East & West | Privacy Policy. Seasonal storms can make gardening unpredictable, but in general the summers here are dry and hot, while the winters are wet and cold. Oregon averages 13 inches of snow per year. On average, the "Rose City" has 144 sunny days and an annual average temperature of 71 degrees Fahrenheit (22 degrees Celsius), making it an ideal place to foster a rose garden. Portland is the land of microclimates, so the hardiness guides are recommendations at best. Sunset ZONE 17: Marine effects in Southern Oregon, Northern and Central California The climate in this zone features mild, wet, almost frostless winters and cool summers with frequent fog or wind. [3] The highest was recorded on July 29, 1898, in Hermiston, Oregon, and again on August 10, 1898, in Redmond, Oregon, both east of the Cascades, when the temperature reached 122 °F (50 °C). What is a hardiness zone or rating, and what zone is Central Oregon considered? A climate graph showing rainfall, temperatures and normals. Portland: Geography and Climate: The West. Design Build • Yarrow. What to grow? This tendency makes it challenging for certain plants to survive. The climate of Portland, OR Portland experiences a temperate oceanic type of climate (Köppen climate classification Csb) with warm, dry summers and mildly cold, wet winters. East of the Cascades, in non-mountain settings, the annual totals range from 15 to 75 inches (38 to 191 cm), depending on location; they are smallest in the north-central region and the Snake River basin in the southeast and largest in the northeastern valleys and in the high plateaus of the south-central part of the state. If you fall in love with a particular plant, even if it isn’t zoned for our area, we say why not give it a home in your garden? Hardiness zones can be confusing because there are two distinct classification systems that are used to determine a plant’s hardiness (i.e., its ability to survive cold winters). This number is based upon the hardiness zones derived from a map put out by the (link is external)by the(link is external)U.S. Department of Agriculture. Multnomah County, Oregon ASHRAE 169-2006 Climate Zone. ZONE 1A: Coldest mountain and intermountain areas of the contiguous states Marked by a short growing season and relatively mild summer temperatures, Zone 1A includes the coldest regions west of the Rockies, excluding Alaska, and a few patches of cold country east of the Great Divide. This searchable resource includes helpful lists of plants for sun and shade. Climate in Portland, Oregon. Based on data from ski resorts and a few official weather stations, average annual snowfall in the Cascades can range from 300 to 550 inches (760 to 1,400 cm). If this is the case, you will be able to enjoy it for a few more seasons. We were the first US city to adopt a carbon reduction strategy in 1993, and our cutting-edge Climate Action Plan put us on a path to reducing emissions by 80% in 2050. • Black-Eyed Susan She has an A.A.S in Landscape Design and Landscape Construction from Portland Community College. Having an understanding of your local microhabitat is very helpful when deciding which species to plant. In the full sun you are likely to find: Accessibility statement The City of Portland ensures meaningful access to City programs, services, and activities to comply with Civil Rights Title VI and ADA Title II laws and reasonably provides: translation, interpretation, modifications, accommodations, alternative formats, auxiliary aids and services. • Purple Cone Flowers 10 tips to maximize your space. Knowing the plant’s needs will help you select a spot where it is likely to thrive. According to the Köppen climate classification, most of Western Oregon has a warm-summer mediterranean climate (or Csb type), which features warm summers, and wet winters with frequent overcast and cloudy skies. The ability of a plant to perform depends on many factors, including the gardening care given, soil types, available nutrients, proper irrigation, and more. The high desert region of the state is much drier, with less rain, more snow, colder winters, and hotter summers. This location is classified as Csb by Köppen and Geiger. Portland falls into USDA hardiness zone 8b (with average low temperatures from 15 to 20 degrees Fahrenheit) or 9a (with average lows from 20 to 25 degrees Fahrenheit) for parts of inner Portland. • Lavender What zone is Portland in? At lower elevations along the coast, orographic precipitation is less intense but still produces 60 to 80 inches (1,500 to 2,000 mm) a year. In general, temperatures on Earth drop by about 4 °F (2 °C) per each 1,000 feet (300 m) increase in elevation. The southern coastal region is the warmest and winter extreme lows are 30 degrees F., while the coolest regions in the state may dip to -20 degrees F. To find which Oregon zone you are in, you can enlarge the map above. • Bee Balm Temperature by: Fahrenheit / Centigrade [1], Precipitation in the state varies widely: some western coastal slopes approach 200 inches (5,100 mm) annually, while the driest places, such as the Alvord Desert (in the rain shadow of Steens Mountain) in eastern Oregon, get as little as 5 inches (130 mm). Portland is famous for its Monkey-Puzzle Trees. Shrubs that thrive in Portland include: [2], Across Oregon, the wet season runs from November through March, when the jet stream is strongest in the Northern Hemisphere. ZONE 17: Marine effects in Southern Oregon, Northern and Central California The climate in this zone features mild,wet, almost frostless winters and cool summers with frequent fog or wind. Oregon Climate. West of the Cascade Range, winters are chilly with frequent rain and snow. Zone 6b: Oregon City: Zone 8b: Paisley: Zone 6b: Parkdale: Zone 7a: Pendleton: Zone 7a: … The winters are rainier than the summers in Portland. Precipitation is rain, snow, sleet, or hail that falls to the ground. • Solomon’s Seal This site contains recommendations on over 900 exceptional plants that have been selected for gardeners living west of the Cascades, from Eugene up to British Columbia. Portland falls into USDA hardiness zone 8b (with average low temperatures from 15 to 20 degrees Fahrenheit) or 9a (with average lows from 20 to 25 degrees Fahrenheit) for parts of inner Portland. • Azaleas The average annual temperature in Portland is 11.9 °C | 53.3 °F. Rather than guess willy-nilly which species will be able to make it here, many local gardeners refer to each plant’s hardiness zone rating. Monthly temperature, precipitation and hours of sunshine. The Pacific Northwest is known for warm, dry summers and cool, wet winters—and Portland is no exception. Gardeners who are accustomed to conditions on the valley floor will find it difficult to grow the same species at the top of Council Crest, where the elevation is around 1000 feet. It also boasts plenty of extra information on participating nurseries, useful websites, organizations, and more! Climate in Oregon. Landscaping experts the world over appreciate the importance of selecting the correct plants for local climates. Climate data and weather averages in Portland. Describe the climate and name the climate zone at alaska; portland, oregon; and key west, florida. Tracts vary in size but generally align with population density. The USDA and the Sunset Gardening plant hardiness zones can inform your decision of which plants to include in your garden. Shrubs such as Mahonia and red flowering current also do very well in a Portland landscape. From Open Energy Information. Throughout the year, high elevations across the state tend to be cooler than low elevations. [2] Since volcanic peaks in the range are quite high—more than 11,000 feet (3,400 m) in the case of Mount Hood[4]—most of the remaining Pacific moisture falls here in the form of rain or snow. The tables below display average monthly climate and weather indicators in Portland Maine. The exclamation “Location, location, location!” is typically applied to the world of real estate, but it applies equally well to gardening. Place: Multnomah County, Oregon: ASHRAE Standard: ASHRAE 169-2006: Climate Zone Number: Climate Zone Number 4: Climate Zone Subtype: Climate Zone … Portland. The average annual temperature in Portland is 11.9 °C | 53.3 °F. Average temperatures and precipitation amounts for more than 145 cities in Oregon. Planning For the Next Disaster. For example, a shady corner will not warm up as quickly as a sunny spot, and you may find areas that offer more shelter, which can therefore support more temperature-sensitive species. The US average is 205 sunny days. Stability studies of the pharmaceutical drug should be done according to the climatic conditions of the country. The official website of the City of Portland, Oregon. Current local time in USA – Oregon – Portland. [3], In addition to seasonal cycles in solar radiation (more in summer, less in winter), major factors affecting temperatures in Oregon include the moderating influence of the Pacific Ocean combined with variations in surface elevation, especially the Cascade Range. [9], CS1 maint: multiple names: authors list (, https://en.wikipedia.org/w/index.php?title=Climate_of_Oregon&oldid=993215636, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 December 2020, at 11:56. [6] In the Blue Mountains of eastern Oregon, snowfall totals can also be large, between 150 and 300 inches (380 and 760 cm). • Astilbes Further inland, between the Coast Range and the Cascades, snowfall generally averages from 5 to 10 inches (13 to 25 cm) a year. Great Plant Picks is a terrific site that is a part of the Elisabeth C. Miller Botanical Garden. Looking for more? Haskins Dirn0 61R °Oregon City N. Willamette. [3], In most mountain areas in Oregon, the ground above 4,500 feet (1,400 m) is covered with snow from December through April. Included are summary overview charts followed by 146 year-to-year graphs depicting daily temperatures, temperature anomalies, and precipitation. Oregon has 834 census tracts, more than 300 of which were eligible by meeting the definition of a "low income community" in … If you’re aware that a certain plant is highly unlikely to survive the winter, you can also choose to keep it in a pot and bring it inside for the winter. She enjoys spending as much time as she can gardening and being outdoors and is passionate about helping clients transform their outdoor spaces. • Dogwood In this post we go into detail about location-based landscaping in Portland. • Salvias • Forsythia If your gar… East of the valley, the storm air rises again as it meets the Cascade Range, cooling once more and forming condensate at elevations often as low as 3,000 feet (910 m). Exceptions occur at higher elevations in the Blue Mountains and the Wallowa Mountains to the northeast, which get 50 to 80 inches (1,300 to 2,000 mm) a year. Glaciers remain year-round on some Cascade peaks higher than 7,000 feet (2,100 m) above sea level. A climate chart for your city, indicating the monthly high temperatures and rainfall. • Rhododendrons On average, there are 175 sunny days per year in Oregon. • Daisies [2][3], The Pacific Ocean, the moisture-laden air above it, and the storms moving from it over the Oregon coast, are major factors in the state's precipitation patterns. [7], Oregon has a wide range of temperatures, though the extremes are rare. This prevailing pattern breaks down occasionally when dense cold air flows down the Columbia Gorge into the Willamette Valley and lowers temperatures more than usual from Portland to Eugene. This location is classified as Csb by Köppen and Geiger. Through the American Cities Climate Challenge, we’ll continue to lead the way. The heaviest precipitation in the state occurs at 2,000 to 4,000 feet (610 to 1,220 m) above sea level in these coastal mountains. Rebecca Smith is a Design/Sales Associate at Landscape East & West. According to the Köppen climate classification, most of Western Oregon has a warm-summer mediterranean climate (or Csb type), which features warm summers, and wet winters with frequent overcast and cloudy skies. Climate zones from Figure 301.1 or Table 301.1 shallbe used indetermining theapplicablerequirements from Chapters 4 and 5. The mild days and chilly nights during the growing season extend the bloom of summer perennials like columbines and Shasta daisies. • Hellebores, and more. Temperatures can get very cold, but only occasionally, as the result of Arctic cold waves. Find the best time to go to Portland (Oregon). Get Portland's weather and area codes, time zone and DST. [3] The state's largest annual snowfall on record, 903 inches (2,290 cm), occurred at Crater Lake in the Cascades in 1950. • Daylilies In the Portland shade we find: - 3292695 Portland is tackling climate change head on. The term “hardiness” refers to the ability of a plant to withstand an average minimum temperature. Survivalist kits can be used to reduce your risk of catastrophic loss. County Climate Zone. o Exe Stn Estacada Oregon Climate Zone Summary Zone 2 -- The Willamette Valley The Willamette Valley is the most diverse agricultural area in the state of Oregon, and also the home of the majority of the population. [2], The remaining two-thirds of the state is relatively dry, classified as semi-arid, with large areas receiving no more than 12 inches (300 mm) a year. Posted on April 5, 2020 | by admin | Leave a Comment on Planning For the Next Disaster. This enormous, unusual coniferous plant first arrived with the 1905 Lewis & Clark Exposition, a Portland event at which dozens of small Monkey Puzzle trees were handed out to residents. Our Portland landscaping experts can recommend the perfect planting for your yard. Residential Maintenance Graphical Climatology of Portland, Oregon: Daily Temperatures and Rainfall, by Year (1875 – Present) The following is a graphical climatology of Portland, Oregon temperatures and precipitation, from 1875 into 2020. (link is external)The map is based on the average annual mini… Explore Portland's sunrise and sunset, moonrise and moonset. Oftentimes, when we go to purchase plants, the catalog or plant tag will indicate hardiness zone followed by a number. The updated system that was released in 2012 utilizes GIS mapping data, and provides detailed information about average minimum temperatures for each state. USDA Plant Hardiness Zones. Your own yard will almost certainly contain microclimates as well. Oregon gets some kind of precipitation, on average, 134 days per year. Sunset Hardiness Zones. Are your dreams bigger than your yard? 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