The best times to visit Washington for ideal weather are
March 19th to June 3rd
September 17th to November 11th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Washington Travel Guide
Other Washington Travel Info
Weather in Washington
Average temperatures in Washington vary drastically. Considering humidity, temperatures feel very nice much of the year, but hot in the summer and cold in the winter with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 42nd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Washington, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late June where highs are regularly around 104.5°F (40.3°C) with temperatures rarely dropping below 74.6°F (23.7°C) at night.
Washington Temperatures (Fahrenheit)
Washington Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Washington Perceived Temperature (F)
Washington Perceived Temperature (C)
Average Washington Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Washington are June, May, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early October with an average of 4 days of significant precipitation the week of October 1st.
When can you find snow in Washington? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Washington.
Snow on the Ground
The graph below shows the average snow on the ground in Washington (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Washington has some comfortably humid months, with some extremely dry months. The least humid month is June (8.7% relative humidity), and the most humid month is December (44.6%).
Wind in Washington is usually calm. The windiest month is May, followed by June and April. May’s average wind speed of around 7.6 knots (8.7 MPH or 14 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early May where average top sustained speeds reach 22.1 knots, which is considered a strong breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Washington.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||3||Barely noticeable||10.6||Gentle breeze|
|Feb||3.8||Barely noticeable||13||Significant breeze|
|Mar||5.4||Light breeze||17||Gentle breeze|
|Apr||7.2||Gentle breeze||20.2||Strong breeze|
|May||7.6||Gentle breeze||20.7||Gentle breeze|
|Jun||7.2||Gentle breeze||20.2||Strong breeze|
|Jul||7||Gentle breeze||20.3||Gentle breeze|
|Aug||6.2||Light breeze||18.8||Strong breeze|
|Sep||5.2||Light breeze||16.1||Gentle breeze|
|Oct||4.5||Light breeze||14.5||Significant breeze|
|Nov||3.2||Barely noticeable||10.8||Gentle breeze|
|Dec||3||Barely noticeable||10.4||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Washington?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Washington, UT, US is May, followed by June and April. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Washington in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Washington Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 93.6°F (34.2°C) and 62.7°F (17.1°C) with warmer temperatures in the later months. Rain is rare with 0 to 3 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have hot weather with high temperatures that are extremely hot. These months see the least precipitation with 0 to 2 days of precipitation per month. June – August is the second busiest season for tourism in Washington, so lodging and other accommodations may cost slightly more.
Fall (September through November)
Fall daily highs range from 96.9°F (36.1°C) and 57°F (13.9°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 1 to 5 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is too cold this time of year in Washington to be enjoyable for warm weather travelers. The average high during this season is between 62.7°F (17.1°C) and 48°F (8.9°C). On average, it rains or snows a smalll amount: 1 to 4 times per month. These times of year are the slowest with tourists.