What is the average rainfall in portland oregon

Hurricanes, thunderstorms, and tornadoes are very rare. What to pack: Something you should bring year-round is hiking boots. All months of the year can be considered suitable for a nice hike through the parks and trails in and around Portland. Fall is another good season for packing clothing to layer for the cooler evenings in late fall. September: 76 F 24 C. October: 64 F 18 C.

November: 53 F 12 C. Summer may be more crowded, but for many people, the misty green forests and mountains of winter are more attractive than bright summer days. And even in the depths of winter, you'll almost certainly be able to hike and explore the gorgeous scenery of the Pacific Northwest. By December the weather is fairly cold, although not really if you are comparing it to a state like Minnesota. Portland temperatures hover above 40 degrees Fahrenheit 4 degrees Celsius , and it's rare to have a true freeze.

Even in mid-winter, rain is more likely than snow. In fact, the average snowfall in Portland is just 4. The first frost is usually in early November, and the last frost is usually in early April. What to pack: Temperatures can get near 30 degrees Fahrenheit below 4 degrees Celsius at night, so you will definitely want to pack a winter coat and usual winter gear like gloves, scarf, and a hat.

Bring weatherproof boots, as December is Portland's wettest month. December: 46 F 8 C. January: 47 F 8 C. February: 51 F 11 C. The City of Portland is not the rainiest place in the metro area. Downtown Portland receives just over 42 inches of precipitation annually. The rainiest parts of the Portland metropolitan area are Damascus and Happy Valley.

Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. The record: inches at Timberline Lodge on Mt. Hood during January Mosaic of Microclimates Usually the weather stats are reported from the airport northeast part of the city and rainfall and temperature can vary from the airport to other parts of the city.

On the same winter day, you can get rain, hail, and sun. Even within the same hour. The West Hills may experience a significant snowfall that brings trace amounts of snow to other areas. In the summer, traveling from the West Hills lots of trees and wind currents in the hills heading into Beaverton West suburb or across the river into East Portland, you will notice an increase in the temperature.

Winter Portlanders watch the northern Pacific for their weather. The winter rain happens when low-pressure builds in the Gulf of Alaska and the jet stream drops southward to sweep across the northern states. The counterclockwise swirl around the deep atmospheric low pumps moist Pacific air across Oregon from the west and southwest, driving ashore band after band of clouds.

Pineapple Express is the shorthand for especially juicy storms of warmer air that pick up moisture from as far to the southwest of Hawaii and drench the valleys and mountains.

When a high-pressure area builds off the coast, and the jet stream moves north, we are the guarantee dry weather.

Summers are Grand Summers are dry and weeks go by without rain. Mild temperatures and low humidity. June average seven days of temperatures to reach or exceed 80 degrees, July usually sees 15 days, and August averages Portland also sees an average of 12 days of 90 degrees or above. The first frost is in early November, and the last frost in early April. Visit Timber Press gardening links to learn more about Pacific Northwest gardening.

Here are some of the numbers:. Record Rainfall On December , , Portland received 7. In , the Department of Geology at Portland State University published a report documenting the extent of landslides following the flood and evaluating the causes.

The greatest concentration of landslides in Portland was in the West Hills in the wind-blown loess of the Portland Hills Silt Formation. A total of slides were studied in the project. It is a free service for patrons from British Columbia to northern California.

Record Heat The summer of will be remembered not for the occasionally hot day, but for the sheer number of hot days and overnight lows that sometimes never dipped below 70 degrees.

Perhaps the biggest record to fall was the number of 90 degree or greater days, a whopping 29 days, 17 more than average.

The lure of rivers, lakes and swimming holes sent drowning deaths to 36 in the region between Memorial Day and Labor Day, the highest number in nearly a decade. According to the National Weather Service, winter precipitation in Portland falls mostly as rain, with an average of four days with measurable snow. Accumulations rarely exceed two inches and melts rapidly especially if it rains after the snow shower. High temperatures for December through February average in the upper 40s, with lows in mids.

The 3-month period averages Here are some of the factors mixed with general information that create the weather in Portland. Sea surface temperatures in the equatorial Pacific have a huge impact on not only weather in the Pacific Northwest, but across the U.

Above-average sea temperatures usually lead to El Nino, which often translates into a milder and drier winter for the Pacific Northwest. Below-average temperatures, a La Nina, mean our winters will be colder and wetter than average. When neither condition predominates, meteorologists sometimes call it La Nada. Whether El Nino, La Nina or La Nada, Pacific Northwest winters usually can be counted on for periods of heavy rain, high winds, and heavy mountain snows.

The winter season is characterized by mild temperatures, cloudy skies, and rain. Winds are predominately either southerly with mild, rainy spells, or easterly during colder dry spells. Outbreaks of cold arctic air from east of the Cascades will occasionally spill into the Portland area, bringing cold, blustery east winds.

If the east winds occur when the rain is falling over the metropolitan area, a shallow layer of cold air forms along the Columbia River. In and near this cold sub-freezing air, freezing rain and even snow will occur over eastern and northern Portland. Spring is a transitional time as the weather patterns shift from winter to summer. Grand Teton National Park dominates the landscape with its amazing rough, snow-capped peaks that suddenly rise out of the heavens.

In the middle of the Black Rock Desert every year a surreal city arises, the third largest city in Nevada complete with 50, inhabitants. This is most well-known festival in the world; Burning Man. Vermont is one of the nicest states in the US and should be on your bucket list.

It is famous for its beautiful landscape, unspoiled wilderness, breathtaking fall colors, idyllic villages with white houses and churches. Paso Robles is a charming spanish-named town in a lovely wine region.

We made a guide on what to do and where to stay if you want to visit this region in a sustainable way. Mesa Verde is not for summer visitors only. Every July you can go to the underwater festival in Florida. Nearly five hundred divers and snorkelers enjoyed music between the coral reef and fish. The dry season is from November to April making it the best time to visit the Everglades National Park.