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Washington Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Washington year round climate

  • Spring (March–May): Average 10.3–19.6°C, mild climate with moderate rainfall and occasional showers. Common activities: Visiting museums, city walks, flower viewing. Recommended clothing: Comfortable jackets, long-sleeved shirts or light jackets, adjust clothing according to temperature.
  • Summer (June–August): Average 24.8–27.9°C, hot and humid, with the most rainfall in July. Common activities: Outdoor activities, visiting national parks, enjoying city life. Recommended clothing: Lightweight and breathable clothing, short-sleeved shirts, shorts, rain gear.
  • Autumn (September–November): Average 16.3–22.7°C, pleasant and cool and dry weather, ideal for viewing autumn leaves. Common activities: Hiking, visiting wineries, enjoying autumn cuisine. Recommended clothing: Comfortable long-sleeved shirts, light jackets or cardigans.
  • Winter (December–February): Average 4.4–7.0°C, cold and humid, with possible snowfall. Common activities: Indoor activities, museum visits, shopping. Recommended clothing: Warm coats, hats, scarves, gloves.

Washington climatological average

Annual average temperature: approx. 16°C / Annual rainfall: approx. 989 mm / Summer humidity: 65%–75% / Rainiest month: July

Washington monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
4.4°C
94.7
February
7°C
49.3
March
10.3°C
78.3
April
15.5°C
80.3
May
19.6°C
101.7
June
24.8°C
52.3
July
27.9°C
160.3
August
26.4°C
90.7
September
22.7°C
69.7
October
16.3°C
42
November
11.4°C
59
December
5.8°C
111.3

Washington weather for the next seven days

5/5
Tuesday
Sunny
32.4°C/14.3°C
5/6
Wednesday
Moderate rain
23.5°C/13.1°C
5/7
Thursday
Patchy rain nearby
13.8°C/9.4°C
5/8
Friday
Sunny
21.4°C/5.8°C
5/9
Saturday
Patchy rain nearby
22.5°C/13°C
5/10
Sunday
Patchy rain nearby
21.6°C/10.6°C
5/11
Monday
Partly Cloudy
20.4°C/11.5°C

Washington Frequently Asked Questions and Useful Information for Travel

What is the best time of year to visit Washington State?

The ideal time to visit Washington State is generally from June to September when the weather is warmest and driest, perfect for exploring national parks and outdoor adventures. September and October offer fewer crowds and beautiful fall colors, while April and May in spring bring blooming tulips and mild temperatures.

What are the most scenic places in Washington State?

Washington State boasts diverse natural beauty. Iconic mountains like Mount Rainier and Mount Baker offer breathtaking views. Coastal areas such as Deception Pass State Park and the alpine landscapes of Hurricane Ridge in Olympic National Park are stunning. Don't miss the unique geological formations at Palouse Falls and the vibrant fields during the Skagit Valley Tulip Festival.

Is Washington State a worthwhile travel destination?

Absolutely. Washington State offers a rich tapestry of experiences, from vibrant cities steeped in culture and history to unparalleled natural landscapes. Its friendly locals and diverse attractions make it a truly worthwhile destination for any traveler.

What is the most famous tourist attraction in Washington State?

The Space Needle in Seattle is undoubtedly the number one tourist attraction in Washington State. Standing tall above the city, it offers an iconic symbol of Seattle and features a rotating restaurant and an observation deck with panoramic views, originally built for the 1962 World's Fair.

What kind of natural scenery can I expect in Washington State?

Washington State is renowned for its dramatic natural beauty, including majestic snow-capped volcanoes like Mount Rainier and Mount Baker, pristine alpine lakes, rugged coastlines, lush rainforests, and fertile valleys. The diverse landscapes provide endless opportunities for outdoor exploration.