Year-round weather and climate in Washington, United States
Average temperatures in Washington run from an average low of 0°C32°F in January up to an average high of 32°C90°F in July. October is the driest month at 4 rainy days; July the wettest at 16. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 690K
- Currency
- USD
- Language
- English
- Time zone
- New York
Best time to visit
The most pleasant weather falls in August, September, and October, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Moderate Showers: Rainfall is standard and manageable. A compact travel umbrella or light rain jacket will easily get you through any wet days.
Day-to-night swing
The Daypack Trap: Beware the "noon illusion". In months like April, crisp sunny days drop off a cliff by 12°C22°F at sunset. Always carry an evening layer.
Seasonality Profile
Humid Subtropical: Sweltering, wet summers accompanied by mild, drier winters.
Evening vibe
Cozy Indoor Culture: Evenings are generally crisp, damp, or sweltering. Nightlife centers around indoor venues.
Sightseeing stamina
Summer Heat Fatigue: Midday heat in July is intense. Pack high-SPF sunscreen and a wide-brimmed hat.
Average temperatures, sunshine, and rainfall
Average monthly weather in Washington, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Oct is typically driest at 4 days (24mm); Jul the wettest at 16 days (144mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 9°C / 47°F | 0°C / 32°F | 6h | 10 | 94mm |
| Feb | 11°C / 52°F | 1°C / 33°F | 7h | 9 | 63mm |
| Mar | 14°C / 57°F | 3°C / 38°F | 8h | 10 | 114mm |
| Apr | 21°C / 69°F | 9°C / 48°F | 9h | 10 | 102mm |
| May | 23°C / 74°F | 13°C / 55°F | 10h | 12 | 88mm |
| Jun | 29°C / 85°F | 17°C / 63°F | 12h | 12 | 107mm |
| Jul | 32°C / 89°F | 21°C / 70°F | 12h | 16 | 144mm |
| Aug | 30°C / 85°F | 20°C / 67°F | 11h | 13 | 130mm |
| Sep | 26°C / 79°F | 17°C / 62°F | 8h | 12 | 113mm |
| Oct | 21°C / 69°F | 10°C / 50°F | 9h | 4 | 24mm |
| Nov | 14°C / 58°F | 5°C / 41°F | 8h | 8 | 70mm |
| Dec | 9°C / 48°F | 1°C / 34°F | 6h | 10 | 138mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Washington?
The most sunshine in Washington comes around July, averaging 12 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Washington?
Your packing list depends entirely on when you travel. Temperatures in Washington swing from an average low of 0°C32°F in January up to 32°C90°F in July. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Washington?
Washington gets rain on about 126 days out of the year. The wettest month is July. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Washington with Packola.
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