Winter months bring more precipitation from mid-latitude cyclones, while summer months are dryer from subtropical highs. Free 30 Day Long Range Weather Forecast for Portland, Oregon Enter any city, zip or place. Metric (°C / mm) | Imperial (°F / inches) In winter, the region is primarily affected by Maritime Polar air, bringing moisture and moderating temperatures. Portland's latitude can receive mid-latitude cyclones, as well as warm, cold, and occluded fronts. West wind 5 to 9 mph becoming calm after midnight. Portland Weather Radar. Portland's location is 45 deg 31' 12" N, 122 deg 40' 55" W. It is part of the Pacific Northwest region in the United States. Tonight. The time period when the sun is between 6 and 12 degrees below the horizon at either sunrise or sunset. These locations have both commonalities and differences that this blog will discuss. One still should be able to carry on ordinary outdoor activities. Portland, OR Daily Weather | AccuWeather May 6 - May 17 Thu 5/6 64° /45° Both regions experience the effects of Maritime Polar and Continental Polar air masses, as well as Maritime Tropical. Summer in Portland is mostly warm and sometimes hot, with low humidity. Our world is facing a great challenge, one that is arising due to an increase in global temperatures. Portland's population grew from 8,293 in 1870 to 583,776 in 2010, and accompanying industrialization occurred during this time. Long term precipitation trends show less change than that of temperatures. Given the potential for increased precipitation in the winter months, there will be greater risk for winter flooding in Portland. Portland, OR FOX 12 FORECAST - SHOWERS THIS EVENING, WET AT TIMES THROUGH MIDWEEK Monday, May 17th, 3:10 P.M. We’ve seen quite a change today! Warmer temperatures will result in more winter precipitation falling as rain, altering snowpack and traditional melting patterns, potentially affecting water supplies, hydroelectric power creation, navigation, recreation, and ecosystems tied to rivers and streams. . Chance of precipitation is 70%. It is affected by multiple air masses, dominantly Maritime Tropical and Maritime Polar, and occasionally Continental Polar. Portland's temperature trends are rising, and warming trends are reflecting greater temperature increases in the winter months, and weaker increases in fall months. This is due to the Coast Range to the west creating orographic lift and precipitation, reducing available moisture reaching inland in Portland. In the beginning of morning astronomical twilight and at the end of astronomical twilight in the evening, sky illumination is very faint, and might be undetectable. access_time 7:18 PM PDT on May 21, 2021 (GMT -7) | Updated 13 seconds ago. Portland has become dryer, while other areas of the state are receiving greater amounts of precipitation, but again, at a less dramatic rate of change than temperatures. Ordinary outdoor activities are not possible at this time without extra illumination. (Weather station: Portland International Airport, USA). ", ", Picture source: http://www.kgw.com/weather/maps?radar=63612987&img=9&c=y, Picture source: http://www.wildpnw.com/2011/06/20/rain-shadow-effect-pacific-northwest/#.T3tC5mBhwVk. Current weather in Portland and forecast for today, tomorrow, and next 14 days Monday Tuesday Morning Afternoon Evening Night Morning Afternoon Evening Forecast Temperature 55 F 65 F 57 F 47 F 51 F 59 F 53 F Cloudy. Both locations are on or near the western shorelines of their continents. Portland's latitude is 45.5 Degrees North, while Liverpool's in 53.4 Degrees North. The sun does not contribute to the illumination of the sky before this time in the morning, or after this time in the evening. Portland lies in the northern part of the Willamette Valley, formed by the Pacific Coast Range to the west and the Cascade Range to the east. This picture highlights how prevailing winds and topography affect the weather in the Portland region. Be prepared for the day. We will review the data in question. KGW weather team. Please select the information that is incorrect. This Afternoon. All areas of the world will be effected with varying degrees of change, some more extreme than others. Annual Weather Averages Near Portland Averages are for Portland International Airport, which is 7 miles from Portland. Current conditions, warnings and historical records 53.1 F Now Feels Like 46.5 F Portland, Portland International Airport (6 miles) Relative The time period when the sun is between 12 and 18 degrees below the horizon at either sunrise or sunset. Biodiversity in a Changing Climate. Average Weather in Portland Oregon, United States In Portland, the summers are short, warm, dry, and mostly clear and the winters are very cold, wet, and overcast. Weather forecast and conditions for Portland, Oregon and surrounding areas. I would estimate that in Portland, these variations would occur with. The combined effects discussed reveal the Portland area undergoing a general. A few passing clouds. One additional factor is the rain shadow affecting Portland. www.liverpoolweather.blogspot.com, Blogs 1 and 2. The time of Actual Sunset minus the time of Actual Sunrise. Portland should expect these trends to continue. Winds W at 5 to 10 mph. Portland Weather Forecasts. Current weather maps for the Portland region show a cold front approaching. no moonlight, or other lights). Lisa Ritchie. Portland, Oregon is right in the beating heart of the Pacific Northwest. 7 day forecast Portland, Oregon Check out the weather forecast for Portland now and how it will evolve in the next 7 days. In Portland, there are 4 comfortable months with high temperatures in the range of 70-85°. This creates higher temperatures due to urban heat island effects from nearby industrial areas. Weather radar map shows the location of precipitation, its type (rain, snow, and ice) and its recent movement to help you plan your day. In Portland, the Cascade Range to the east will block Continental Tropical air masses, whereas Liverpool as no such barrier. Portland 14 Day Extended Forecast. Liverpool's higher latitude allows the Maritime Arctic air to occasionally bring cold, wet air masses, responsible for snowfall in the region. High 72F. Additionally, greater temperature rise in seen in the trending of Minimum temperatures. Take control of your data. Daytime highs will stay in the mid 60s under mostly cloudy skies. Portland is near both mountains and sea, which means it has what is called a "Mediterranean" climate—though Portland is not as warm as southern Italy. 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. August is the hottest month for Portland with an average high temperature of 81.1°, which ranks it as cooler than most places in Oregon. Thank you for reporting this station. This includes influences from the nearby Pacific Ocean, the presence of two mountain ranges, and varying air masses that impact weather. Report prepared for the Climate Leadership Tomorrow, we'll … This blog will discuss the climate of Portland, Oregon, what meso-scale and micro-scale effects impact the weather station, the region's recent climate history, and where the area lies in the Koppen-Geiger classification system. Climate change will also affect regions with this climate by intensifying the dry summers, potentially decreasing available water supplies. Temperatures peak in August with an average daily high of 81 °F (27 °C), before starting to cool in September. Oregon’s Cloudy, with a high near 68. Portland has very distinct seasons. We recognize our responsibility to use data and technology for good. Rain is moving in this morning as a slow moving cold front hits the area. A … Portland, Oregon's Relative Location in North America, Portland, Oregon Weather Station Location (red pin), Map: http://www.wunderground.com/wundermap/?lat=45.588612&lon=-122.597504&zoom=8&pin=Portland%2c%20OR. Calendar overview of Months Weather Forecast. Portland supplies its water needs with two dams, designed with minimal capacity intended to refill annually. Information on road Tonight's low temperatures will dip to around 50 degrees. 80 degree weather continues today, then a cool down KGW weather … The horizon should be clearly defined and the brightest stars should be visible under good atmospheric conditions (i.e. The Bowen ratio relates sensible heat to latent heat, with regions of higher moisture content having lower ratios. I would estimate the region's average Bowen ratio to be 0.4, due to maritime characteristics. Weather in Portland, Oregon The most pleasant months of the year for Portland are September, July and August. This could become problematic during cycles of prolonged drought. Portland, Oregon is no exception to this, and will be dramatically affected by climate change due to geographic, demographic, economic, and other factors. Tomorrow's temperature is forecast to be MUCH WARMER than today. After the cold front moves through cooler air will push in and keep the pattern unsettled. Portland weather forecast updated daily. Precipitation models used by the IPCC predict that generally in the Pacific Northwest there will be increased precipitation in the winter months and decreased precipitation in the summer months. Check the current conditions for Portland, OR for the day ahead, with radar, hourly, and up to the minute forecasts. News, information, and guides to keep you safe. The Pacific Northwest in general has dry, hot, and beautiful summers and it also has wet, cold, damp winters. These graphs reflect a general warming and drying trend over the past 140 years. This has the immediate effect of raising temperatures in urban areas. Detailed Forecast. I will be comparing my site, Portland, to Liverpool (www.liverpoolweather.blogspot.com). In fact we'll see showers and possibly hail showers or even thunderstorms on Wednesday and Thursday. When comparing average monthly high and low temperatures, Portland experiences slightly higher temperatures in the summer months, and nearly the same winter temperatures as Liverpool. Oregon has different climates due to many geographic and topographic features discussed in prior blogs. Years prior to 1941 report a weather station in downtown Portland, 1941 and later report the airport. http://people.eng.unimelb.edu.au/mpeel/Koppen/North_America.jpg, Data source: http://www.usclimatedata.com/climate.php?location=USOR0275, http://www.physicalgeography.net/fundamentals/7v.html, Pictures source: http://www.sci.uidaho.edu/scripter/geog100/lect/05-atmos-water-wx/05-part-6-air-masses/ch5-part-6-air-masses.htm, Meteorologist Nick Allard of Portland NewsChannel 8 predicted on Tuesday, April 3rd ". NOAA weather radar, satellite and synoptic charts. One of the most important factors to consider when anticipating climate change is the hydrological cycle. Initiative, University of Oregon. Temperature Forecast Normal Avg High Temps 70 to 85 ° Avg Low Temps 50 to 65 ° Avg High Temps 20 to 30 ° During the summer months, there will be a larger risk of drought than the area is accustomed to. Portland is characterized as having a maritime climate. Oregon's temperatures average a 0.8 degrees Celsius increase, although this varies locationally throughout the state, with some regions reflecting a cooling trend. ", "Once the rain starts it will stick around for most of the day becoming showers by mid to late afternoon. The entirety of Oregon's weather has been and will continue to be impacted by climate change. You are about to … Don't forget the sunscreen! Portland also experiences greater variability in monthly precipitation, due to geographic and topographical differences. Both climate change and urban heat island effects could be the reasons for the difference. A 50 percent chance of showers. There is great variability locally, and exact estimates of change for the Portland area are not given. When comparing average monthly high and low temperatures, Portland experiences slightly higher temperatures in the summer months, and nearly the same winter temperatures as Liverpool. www.weatherinportland.blogspot.com, Blogs 1 and 2, Eben Dennis. Micro-scale climate impacts come from the station's location near the Columbia River at the airport of the United States's 29th largest city. Hour-by-Hour Forecast for Portland, Oregon, USA Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 72 °F. Low 47F. Liverpool also can be effected by Continental Tropical and Maritime Arctic air masses. Partly cloudy skies in the evening, then becoming cloudy overnight. Get the forecast for today, tonight & tomorrow's weather for Portland, OR. Rain is rare and the evenings are long, with the … The effects of temperature rise and precipitation change will affect the Portland region in many ways. The models that the IPCC uses show a potential increase of temperatures in the Pacific Northwest in 2040 ranging from 0.8 to 2.6 degrees Celsius, and an increase between 1.6 and 4.9 degrees Celsius by 2080. The location of the weather station used for this blog is at the Portland International Airport, and is 20 ft above sea level. News, Weather, Sports, Breaking News KATU ABC 2 offers coverage of news, weather, sports and community events for Portland, Oregon and surrounding towns, including Beaverton, Lake Oswego, Current Weather Forecasts, Live Its relative distance from the Pacific Ocean moderates its climate given its northern location. The time of Civil Sunset minus the time of Civil Sunrise. However, this is offset by the station's location in a valley near a flowing body of water which will lower temperatures immediately adjacent to the river. Winds WNW at 5 to 10 mph. Both locations receive the moderating effects of the adjacent oceans, therefore these temperature differences are due to latitude and continentality differences. Meso-scale impacts come from the region's proximity to the Pacific Ocean, and its location on the western side of the North American Continent. Portland's latitude is 45.5 Degrees North, while Liverpool's in 53.4 Degrees North. The sunniest time of year in Portland is normally July with bright sunshine on average for 72 % of daylight hours; that's 11 hours of sunshine per day. See more current weather. Heavy rain, landslides, snow, or ice, the Portland Bureau of Transportation (PBOT) is the city's lead agency keeping our city streets safe during inclement weather. Spring run-off occurring at earlier times in the year could prematurely fill the reservoirs, resulting in shortfalls during the dryer summer months. Cloudy, then gradually becoming partly cloudy, with a low around 46. A Portland Water Bureau publication estimates that water shortfalls directly attributed to climate change approach 1.5 billion gallons as soon as 2020. Portland metro Saturday weather: Is it time to dust off the kiddie pool already? The Intergovernmental Panel on Climate Change (IPCC) published the document. Shorter term precipitation trends reflect greater change, with differing effects throughout the state of Oregon. The change in length of daylight between today and tomorrow is also listed when available. Additionally, these long term trends are impacted by a wet period that occurred at the start of the twentieth century. This climate is classified as Mediterranean, mild with warm, dry summers. The time period when the sun is no more than 6 degrees below the horizon at either sunrise or sunset. Portland, Oregon has already felt the effects of climate change, reflected through rising temperatures and decreased precipitation when measured over the last century. Final Blog: Climate Change in Portland Oregon, Maps: http://depts.washington.edu/landecol/PDFS/OR-CC-report.pdf, Lawler J. J., M. Mathias, A. E. Yahnke, and E. H. Girvetz. © Copyright TWC Product and Technology LLC 2014, 2021. Liverpool to be affected this way due to geographic and topographical differences between the cities. Temperature change will have many effects, including changes in precipitation, sea level rise, increased desertification, increased extreme weather events and changes in weather patterns. When using the GEEBIT Version 3B spreadsheet, the following table reflects various combinations and the resultant temperature changes. Summer Weather in Portland. It is 65 miles inland from the Pacific Ocean, near the confluence of the Willamette and Columbia Rivers. Free Long Range Weather Forecast for Portland, Oregon July 2021. Updated several times daily, this includes the outlook around Oregon and in Southwest Washington. Continental Polar air can also enter into the region, bringing cold, dry air. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 75 °F. You are about to report this weather station for bad data. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 22 mph. Sunshine along with some cloudy intervals. In summer, Portland is more likely affected by Maritime Tropical and occasionally Continental Polar air. Portland's weather is affected dominantly by Maritime air masses. Globally, the 100 year linear trend from 1906-2005 was an increase of 0.74 degrees Celsius. Low 51F. These maps show the variability occurring throughout the state of Oregon with respect to Maximum and Minimum temperatures. This is magnified by Portland's close proximity to both the Columbia River and the Willamette River and its many areas that are low-lying near these rivers. The horizon is well defined and the outline of objects might be visible without artificial light. Portland is not experiencing the highest gains for Maximum Temperature trends, however it appears to be near the highest coefficients for Minimum Temperature trends in the state. Additional stress could be placed on water storage supplies from increased evapotranspiration due to higher temperatures and a dryer climate. Generally, the occluded fronts here are warm occluded fronts, as diagrammed in the picture below. Precipitation is another component of weather that is being impacted by climate change. Rain likely. Portland is categorized as Csb on the Koppen-Gieger climate scale. PORTLAND, Oregon — We've reached 80 … The maps below show the air masses and the associated weather. Winds WSW at 5 to 10 mph. Based on weather reports collected during 1985–2015. People are out in droves during the summer but many tend to stay home during the winter months. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Portland area. Portland is approximately 60 miles inland, with the Coast Range separating it from the Pacific Ocean, while Liverpool is within a few miles of the Irish Sea. Highs will be in the low to mid-50s. Look for a few more showers on Friday but we'll be drying out overall into the weekend. Passing clouds. These maps reflect the greater precipitation variability that has occurred during more recent years in Oregon due climate change, magnified by geographic and topographic differences throughout the state impacting weather. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend!
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