The term “hardiness” refers to the ability of a plant to withstand an average minimum temperature. In the full sun you are likely to find: 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] 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). 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. • Butterfly Bushes Brown Patches – Common causes and what to do about them. Place: Multnomah County, Oregon: ASHRAE Standard: ASHRAE 169-2006: Climate Zone Number: Climate Zone Number 4: Climate Zone Subtype: Climate Zone … 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. Get Portland's weather and area codes, time zone and DST. Oregon Climate. Average temperatures and precipitation amounts for more than 145 cities in Oregon. Explore Portland's sunrise and sunset, moonrise and moonset. It is interesting to note that the 2012 updated version of the USDA … What happened to my lawn? • Daylilies Zone 6. 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. Oregon zones are expansive and include zones 4b through 9b. Eastern Oregon falls into the cold semi-arid climate (or BSk type), which features drier weather. On the other hand, most winter precipitation in the Coast Range falls as rain, though heavy snow sometimes occurs. 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. • Dogwood Having an understanding of your local microhabitat is very helpful when deciding which species to plant. 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. Annual Weather Averages Near Portland. Light Up Your Nightscape with Smart Outdoor Lighting. Although Portland temperatures are mild for most months of the year, we do see freezing temperatures that may last several weeks. 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. The US average is 28 inches of snow per year. What zone is Portland in? • Coreopsis (link is external)The map is based on the average annual mini… 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). Sunset Hardiness Zones are different. [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). 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 landscaping experts know that our locale is a gardener’s paradise. Your own yard will almost certainly contain microclimates as well. 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. Zone 9b: 25°F to 30°F: Oregon City: Zone 8b: 15°F to 20°F: Otis: Zone 8b: 15°F to 20°F: … It also boasts plenty of extra information on participating nurseries, useful websites, organizations, and more! 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. Portland. Compared to Seattle and Vancouver, Portland is both warmer and drier all year round. The exclamation “Location, location, location!” is typically applied to the world of real estate, but it applies equally well to gardening. On average, there are 175 sunny days per year in Oregon. 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. To plant or not to plant is often the question for gardeners. 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. • Daisies 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 state's largest annual snowfall on record, 903 inches (2,290 cm), occurred at Crater Lake in the Cascades in 1950. Let’s take a look at both of these systems. 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. [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. Glaciers remain year-round on some Cascade peaks higher than 7,000 feet (2,100 m) above sea level. [5], Snowfall in Oregon is greatest in the Cascade Range. [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. For more advice on which plants shine in Portland’s climate, give us a call! 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 . HOA Maintenance, Serving the greater portland metropolitan area: Landscape East & West, LCB #8697 - CCB #181577, WA #LANDSEW877JT © 2021 Landscape East & West | Privacy Policy. USDA Plant Hardiness Maps may be used to determine if a plant is expected to survive winter in your given hardiness zone. Coniferous and deciduous trees of all sizes and shapes grow here, including Alders, Birches, Beeches, Pines, Douglas Firs, and Cedars. CLIMATE ZONES SECTION 301 CLIMATE ZONES 301.1 General. Oregon gets some kind of precipitation, on average, 134 days per year. Are your dreams bigger than your yard? It lies in the Pacific Northwest part of America, within the state of Oregon, at the confluence of the Columbia and Willamette rivers. The winters are rainier than the summers in Portland. The tables below display average monthly climate and weather indicators in Portland Maine. The Pacific Northwest is known for warm, dry summers and cool, wet winters—and Portland is no exception. The official website of the City of Portland, Oregon. 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. Survivalist kits can be used to reduce your risk of catastrophic loss. The Portland lies on 10m above sea level The climate here is mild, and generally warm and temperate. Each zone consists of an entire census tract, as established for the decennial U.S. Census. 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. [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. We also touch on which plants thrive in Portland. Included are summary overview charts followed by 146 year-to-year graphs depicting daily temperatures, temperature anomalies, and precipitation. Looking for more? The US average is 205 sunny days. Posted on April 5, 2020 | by admin | Leave a Comment on Planning For the Next Disaster. Climate and average weather for Portland (Oregon), United States of America displayed in graphs. Climate data and weather averages in Portland. [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). The ability of a plant to perform depends on many factors, including the gardening care given, soil types, available nutrients, proper irrigation, and more. Portland (and the entire Willamette Valley) is in Zone 6 according to the Sunset rating system. [6] In the Blue Mountains of eastern Oregon, snowfall totals can also be large, between 150 and 300 inches (380 and 760 cm). Temperature by: Fahrenheit / Centigrade Residential Maintenance From Open Energy Information. • Yarrow. Shrubs such as Mahonia and red flowering current also do very well in a Portland landscape. Shrubs that thrive in Portland include: In the Portland shade we find: Through the American Cities Climate Challenge, we’ll continue to lead the way. The updated system that was released in 2012 utilizes GIS mapping data, and provides detailed information about average minimum temperatures for each state. Landscaping experts the world over appreciate the importance of selecting the correct plants for local climates. What zone is Portland in? [8] The hottest area of the state is the southwest; Jackson County is the warmest place in the state during summer. 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). 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. Our Portland landscaping experts can recommend the perfect planting for your yard. [3], In most mountain areas in Oregon, the ground above 4,500 feet (1,400 m) is covered with snow from December through April. 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. 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. • Solomon’s Seal Zone 6b: Oregon City: Zone 8b: Paisley: Zone 6b: Parkdale: Zone 7a: Pendleton: Zone 7a: … 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. • Bee Balm Oftentimes, when we go to purchase plants, the catalog or plant tag will indicate hardiness zone followed by a number. 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. 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. About 1001 mm | 39.4 inch of precipitation falls annually. 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. If this is the case, you will be able to enjoy it for a few more seasons. Average monthly Rainfall, Sunshine, Temperatures. Averages are for Portland International Airport, which is 7 miles from Portland. There are dozens of perennials and shrubs that do well here. 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. Climate in Oregon. The US average is 28 inches of snow per year. This searchable resource includes helpful lists of plants for sun and shade. • Rhododendrons 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. Planning For the Next Disaster. [2], Across Oregon, the wet season runs from November through March, when the jet stream is strongest in the Northern Hemisphere. Multnomah County, Oregon ASHRAE 169-2006 Climate Zone. [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. She has an A.A.S in Landscape Design and Landscape Construction from Portland Community College. Sunset Hardiness Zones. A climate chart for your city, indicating the monthly high temperatures and rainfall. • Geraniums • Hellebores, and more. The average annual temperature in Portland is 11.9 °C | 53.3 °F. Portland is in Zone 6 according to the Sunset hardiness system. Seasonal storms can make gardening unpredictable, but in general the summers here are dry and hot, while the winters are wet and cold. [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. Temperatures can get very cold, but only occasionally, as the result of Arctic cold waves. Portland: Geography and Climate: The West. 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. • Coral Bells • Witch Hazel. County Climate Zone. On average, there are 144 sunny days … Great Plant Picks is a terrific site that is a part of the Elisabeth C. Miller Botanical Garden. Precipitation is rain, snow, sleet, or hail that falls to the ground. Climate zones from Figure 301.1 or Table 301.1 shallbe used indetermining theapplicablerequirements from Chapters 4 and 5. Throughout the year, high elevations across the state tend to be cooler than low elevations. Portland is famous for its Monkey-Puzzle Trees. 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. Describe the climate and name the climate zone at alaska; portland, oregon; and key west, florida. 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. • Astilbes The Blue-Wallowa mountains have climates that vary with location. After all, you may luck out and Portland will have a particularly mild winter that your new plant will make it through just fine. • Purple Cone Flowers • Hostas 10 tips to maximize your space. 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! Climate Zone 4C is defined as Mixed – Marine with IP Units 3600 < HDD65ºF ≤ 5400 and SI Units 2000 < HDD18ºC ≤ 3000 . 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. City is well known for its greenery, and more of color and texture – hardscapes that!. Use to categorize which plants to include in your given hardiness zone rating the world plant is expected to winter! Released in 2012 with the help of researchers from Oregon state University 38 inches of rain per year Oregon... 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