Portland Oregon Weather
Contrary to popular belief, Seattle and Portland are the wettest cities in the US, but Portland is an exception. The Pacific Northwest is known for its warm, dry weather, especially in the spring and summer months, and is also home to some of America's driest weather phenomena.
Depending on your perspective, Northwest cities are either the wettest or driest cities in the US, or have one of the highest rainfall rates per square mile of land area. Despite Portland's reputation as a rainfall-rich city, it doesn't even make the top 10 of the drier cities in the National Weather Service's annual rainfall index. In fact, Portland ranks third on this list, behind Seattle and San Francisco, with an average rainfall of just over 1,000 inches per year.
Although official rainfall measurements are being conducted at Portland's airport, one of the city's driest places, some parts of the metro area had as much as 2.5 inches of rain in one day. While drizzle can last throughout the day and dissipate in the afternoon, rain usually falls in Portland within hours. Compared to other cities, where it can rain for hours, Oregon takes days, often weeks, to accumulate 2-3 inches. Even in places like Washington, D.C., where rain can cause flooding, it can take days (often a week) for rain to fall in Portland.
Suddenly the sun comes out for a short time and it rains for an hour, but then it rains again. Suddenly it will rain for hours , then suddenly the moon will shine and suddenly it will rain again - after - back for an hour or two or maybe even a day or so. Suddenly the sun comes in again for a short time - time that And then, after a few minutes of sun and a little rain, there will have been a brief period of sunny, warm and dry weather in the city.
This view is the best way to understand weather patterns in the metro area, but precipitation and temperatures can vary from the airport to other parts of the city and from city to city. The weather statistics below show that rain can stop for a few hours or days at a time when rain clouds move in and out.
Every day, different types of precipitation are observed, with no trace amounts, and rain and snow fall on the same day. Precipitation values, based on three hours of precipitation rotating around the hour in question, are linear and amount to 10% precipitation. Due to this classification, the most common form of precipitation this year was rainfall alone, with a precipitation value of 10.5%, but different forms of precipitation, such as snow, were observed.
The cloud cover falls linearly and is 10% on clear skies, and the sky moves in the range of 10 - 15%, with a maximum value of 20 - 30%. Rain is rare, evenings are longer when the sun sets, but the sky is brighter and brighter than usual, with an average of 1.5% clear sky and a minimum of 0.3% clouds.
Although many days are cloudy and drizzly, the 10-15% mark for an average weekday is rarely reached, with an average of 1.5% clear sky and a minimum of 0.3% clouds.
Generally, a little snow falls in just a day or two, but the average snowfall in Portland is only 4.3 inches. The snow is likely to fall in the late afternoon and early evening of the morning and evening, as we tend to fall at a rate of 1 - 2 inches per day or about 1.5 - 3 inches on average.
During the summer, you will notice a temperature increase as you travel through the West Hills, north from the Pacific Northwest and north - east to the Oregon coast and east - west. The air that flows into Portland is a mixture of air that originally flowed in from the other side of the ocean. Easterly winds occur when rain falls over the urban area, and westerly winds when it does not rain.
The hottest months in Portland are July and August, but although August is the hottest month, you'll find the weather refreshingly cool, especially if you're in the sizzling mid-Atlantic.
We recommend sturdy footwear if you want to take advantage of the many hiking trails and hiking areas in Portland, but if winter gear is on your list, you should bring it. Mount Hood offers many great opportunities for hiking, biking, skiing and mountain biking, so bring your winter gear. The weather is unpredictable (rain), but the mild weather in Portland makes it easy to enjoy the neighborhoods and outdoor areas all year round. We will have a great vacation almost every year, visiting one of Oregon's most popular tourist destinations, such as Portland International Airport, Portland State University or the Oregon Museum of Natural History, and visiting some of our cities, neighborhoods and outdoor areas that you can enjoy all year round, even in the coldest months.