In a 20-year period, the lowest winter temperatures in Zone 17 ranged from 36 to 23°F (2 to –5°C). Mild ocean air moderates Zone 5, allowing it to produce some of the finest rhododendrons, Japanese maples, and rock garden plants anywhere.Heaths and heathers thrive in sandy soils along the coast and inland, and katsura trees reach their prime, rarely scorching as they may inland. The climate is humid from spring through early fall; summer rains are usually dependable. In the contiguous states, Zone 4 has more cold than neighboring Zone 5, more snow, and a shorter growing season. Ten-year extremes average 0 to 10°F (–18 to –12°C). The average highest temperature in Zone 17 is only 97°F (36°C). Established plant material in t… The Willamette Valley’s hills and small mountain ranges create many microclimates. Warm summers and chilly winters make the Willamette Valley one of the West’s best-known growing areas for berries, hazelnuts, roses, flowering fruit trees, and broadleafed evergreens. Sunset ZONE 2B: Warmer-summer intermountain climate. Such mild temperatures favor leaf vegetables, which are slow to bolt, and flowering ornamentals like begonias. Deciduous fruit trees do well also; the region is noted for its pears, apples, peaches, and cherries. This approach is used to avoid the difficulties encountered when the USDA Hardiness Zones are applied to parts of the western U.S.  For example, with the USDA Hardiness Zones, the Olympic rain forest in Washington State is in the same USDA Hardiness Zone, Zone 8, as part of Arizona's Sonora Desert. Like Zones 1 to 3, Zone 11 has cold winters, and like Zone 13, it has hot summers. Summer temperatures in Zone 6 average 10 to 15°F (5 to 8°C) higher than those along the coast, while winters are cold enough to trigger good fruit set. Click on Oregon State University, or write Oregon State University, Corvallis, OR 97331-4501, USA. No zone grows better perennials and bulbs; people who like woodland plants and rock plants love Zone 4. Zone 6 includes the Willamette Valley in Oregon, the Columbia River Valley between Vancouver and Longview, and the Cowlitz drainage from Longview to Toledo. In the contiguous states, Zone 4 has more cold than neighboring Zone 5,more snow, and a shorter growing season. Big freezes do considerable damage when they come very early or very late. Winter lows average in the 0 to 11°F (–18 to –12°C) range; extremes range from –25 to –50°F (–32 to –46°C). As it extends north, the zone first touches salt water in northern Puget Sound and is almost entirely surrounded by salt water in southeastern Alaska. These zone descriptions will guide you in choosing the right plants for your garden. 20°F to 25°F. The climate pleases plants that require a marked seasonal pattern to do well—flower bulbs, peonies, lilacs, and flowering cherries, for example. These areas are too high and cold in winter to be included in milder Zones 15 and 16. Sunset’s Climate Zones consider temperature as well as other important factors: Latitude. 15°F to 20°F. On most days and in most places, the fog tends to come in high and fast, creating a cooling and humidifying blanket between the sun and the earth, reducing the intensity of the light and sunshine. Sunset ZONE 6: The Willamette and Columbia River Valleys. One of the West’s most narrow, linear climates, Zone 4 runs from high in the coastal mountains of Northern California to southeastern Alaska, losing elevation as it moves north. Though the growing season averages between 200 and 250 days, heat accumulation is low, and warm-season vegetables develop slowly. Tucked between the Coast Range and the Cascades, Zone 6 includes the Willamette Valley in Oregon, the Columbia River Valley between Vancouver and Longview, and the Cowlitz drainage from Longview to Toledo. Zone 3b offers one of the longest growing seasons of the intermountain climates. Sunset climate zones: Western Washington. Historically, there are less than 10 frost-free days (32°F or greater) in the city of Bend. The USDA zone map divides the country into 26 or so different zones, while the Sunset system has over 40. You’ll also find this warm-summer, snowy-winter climate along Colorado’s Western Slope and mild parts of the Front Range  and in mild parts of the Columbia and Snake River basins. In spite of this, Portland is among the mildest parts of Zone 6—a great place to experiment with borderline plants like eucalyptus, acacias, and oleanders. Warmer summers and cooler winters distinguish Zone 6 from coastal Zone 5. All Rights Reserved. These zone descriptions will guide you in choosing the right plants for your garden. If your garden gets reliable snow cover (which insulates plants), you’ll be able to grow perennials listed for some of the milder zones. Because of the influence of latitude, this climate lies mostly at low elevations in Oregons Rogue Valley, middle elevations around Californias Central Valley, and at middle to higher elevations farther south. South- and west-facing slopes are warm enough to produce world-class Pinot Noir grapes, while northand east-facing slopes are perfect for shade tolerant plants like rhododendrons, fatsias, and camellias. East of the Sierra and Cascade ranges, you can hardly find a better gardening climate than Zone 3a.Winter minimum temperatures average from 15 to 25°F (–9 to –4°C), with extremes between –8 and –18°F (–22 and –28°C). That’s why you’ll find orchards in this zone in almost every state in the West. 10°F to 15°F. Based on the 1990 USDA Hardiness Zone Map, this interactive version covers the state of Oregon which ranges from USDA Zone 4a to USDA Zone 9b. On most days and in most places, the fog tends to come in high and fast, creating a cooling and humidifying blanket between the sun and the earth, reducing the intensity of the light and sunshine. Average January minimum temperatures range from 33 to 41°F (1 to 5°C),with annual lows averaging a few degrees colder, and 10-year extremes ranging from 20 to 6°F (–7 to –14°C). Since trees are typically dieocious (i.e., male and female flowers on separate plants), a given clone may be either male or female. Home » Climate Zones A plant's performance is governed by the total climate: length of growing season, timing and amount of rainfall, winter lows, summer highs, wind, and humidity. Because of the influence of latitude, this climate lies mostly at low elevations in Oregon’s Rogue Valley, middle elevations around California’s Central Valley, and at middle to higher elevations farther south. It also shows up in western Montana and Nevada and in mountain areas of the Southwest. In addition to temperature, the “Sunset” zones also account for latitude, elevation, ocean influence, continental air influence and terrain such as mountains and hills. Interestingly enough, these sunny days are responsible for the occurrence of radiational cooling, resulting in frost any time of the year. Use of this site constitutes acceptance of our. It’s also fine country for native woodland ferns, trilliums, piggyback plants, vine maples, and dogwoods. Winter lows average in the 0 to 11°F (–18 to –12°C) range; extremes range from –25 to –50°F (–32 to –46°C). On most days and in most places, the fog tends to come in high and fast, creating a cooling and humidifying blanket between the sun and the earth, reducing the intensity of the light and sunshine. Average January minimum temperatures range from 33 to 41°F (1 to 5°C),with annual lows averaging a few degrees colder, and 10-year extremes ranging from 20 to 6°F (–7 to –14°C). Woody Broadleaf Search; Conifer Search; Additional Information. Summer temperatures in Zone 6 average 10 to 15°F (5 to 8°C) higher than those along the coast, while winters are cold enough to trigger good fruit set. Zone 7 encompasses several thousand square miles west of the Sierra Nevada and Cascade ranges, and in the mountains that separate the Southern California coast from interior deserts. Generic astronomy calculator to calculate times for sunrise, sunset, moonrise, moonset for many cities, with daylight saving time and time zones taken in account. Another snowy winter climate, Zone 2A covers several regions that are considered mild compared with surrounding climates. ZONE 17: Marine effects in Southern Oregon, Northern and Central California. The average highest temperature in Zone 17 is 97°F (36°C). It gets considerable influence from the Pacific Ocean, but also from the continental air mass, higher elevation, or both. Sunset ZONE 4: Cold-winter areas of the north coast and mild-winter areas of Alaska and British Columbia. About Sunset Climate Zones A plant's performance is governed by the total climate: length of growing season, timing and amount of rainfall, winter lows, summer highs, wind, and humidity. The growing season is 100 to 150 days. Using climate zone information. The mild days and chilly nights during the growing season extend the bloom of summer perennials. SUNSET is a registered trademark Zone 8a. Average winter lows in Zone 4 range from 34°F (1°C) down to 28°F (–2°C),with extreme lows averaging 8 to 0°F (–13 to –18°C). ZONE 43. Woody Plants of Oregon; Woody Plant Search. Zone 9a. The continental influence is felt two to four times each winter when chilly interior air flows west through the Columbia Gorge and produces wind and freezing rain clear to the Portland airport. ZONE 18. Below are the Sunset Climate Zones used to cover Oregon, Washington, and Idaho. If you’re growing vegetables, for example, add at least 50 percent to the days-to-harvest figure listed on the seed package, or start your garden from transplants. Summer highs run between 65 and 70°F (18 and 21°C) along the coast, and between 70 and 75°F (21 and 24°C) inland and around Puget Sound. Sunset ZONE 2A: Cold mountain and intermountain areas. 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. Calculations of sunrise and sunset in Oregon Coast – Oregon – USA for January 2021. Sunset ZONE 7: Oregon’s Rogue River Valley, and Southern California mountains. Sunset climate zones: Western Oregon. The Coast Range buffers the impact of Pacific storms, but Zone 6 is still a maritime climate, with a long growing season (from 155 days at Cottage Grove to 280 days in Portland neighborhoods) and 40 to 55 inches of annual precipitation most places. Sunset ZONE 17: Marine effects in Southern Oregon, Northern and Central California. Kirkland (and most of the Puget Sound lowlands) are solidly in Sunset zone 5. In their habitat, quaking aspen forms clones connected by a common parent root system. Winter temperatures are milder than in neighboring Zone 2a, minimums averaging from 12 to 22°F (–11 to –6°C),with extremes in the –10 to –20°F (–23 to –29°C) range. And while these occasional disasters clear the slate of most borderline plants, they should not serve as a general gauge of plant hardiness here. Zone 8b. Calculations of sunrise and sunset in Eugene – Oregon – USA for January 2021. In the mildest parts of Zone 7—in the extreme southern Salinas Valley, for example—you can get away with growing borderline plants such as citrus, oleanders, and almonds if you choose a spot with good air drainage to take the edge off winter chill. Closer to the poles, the number of daylight hours increases in summer and decreases in winter. ZONE 5: Marine influence along the Northwest coast, Puget Sound, and South Vancouver Island. Zone 7 encompasses several thousand square miles west of the Sierra Nevada and Cascade ranges, and in the mountains that separate the Southern California coast from interior deserts. Hardy to USDA Zone 1 The most widely distributed tree in North America. Compared to neighboring zones in Alaska and Canada, however, it has less winter cold and a longer growing season. Summer temperatures are a bit higher than in Zone 3a—mostly in the high 80s and low- to mid-90s. The continental influence is felt two to four times each winter when chilly interior air flows west through the Columbia Gorge and produces wind and freezing rain clear to the Portland airport. One of the West’s most narrow, linear climates, Zone 4 runs from high in the coastal mountains of Northern California to southeastern Alaska, losing elevation as it moves north. It gets considerable influence from the Pacific Ocean, but also from the continental air mass, higher elevation, or both. 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