Washington
May
Weather in Washington for May 2025
Your guide to Washington weather in May - trends and predictions
In general, the average temperature in Washington at the beginning of May is 20 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.4 °F by the end of May.
Washington sees moderate rainfall in May, averaging 9 rainy days.
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22
Dry days
9
Rainy days
0
Snow days
24°/10°
Temperatures
14 km/h
Avg max wind
72 %
Avg humidity
Washington in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2 21° | 3  18° | 4 14° | |||
| 5 19° | 6  23° | 7  25° | 8 29° | 9 22° | 10  19° | 11  22° |
| 12 23° | 13 23° | 14 22° | 15 21° | 16 22° | 17 22° | 18 19° |
| 19 22° | 20 24° | 21 27° | 22 30° | 23 24° | 24 27° | 25 26° |
| 26 27° | 27 26° | 28 23° | 29 22° | 30 22° | 31 25° |
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Temperatures trend during May in Washington
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 | Patchy rain possible | 20° /12° | 1.3 mm | 5 | |
| May 2 | Patchy rain possible | 21° /11° | 0.6 mm | 5 | |
| May 3 | Moderate rain at times | 18° /9° | 1.5 mm | 5 | |
| May 4 | Patchy rain possible | 14° /9° | 4.7 mm | 3 | |
| May 5 | Patchy rain possible | 19° /8° | 7.7 mm | 5 | |
| May 6 | Overcast | 23° /11° | 5.3 mm | 6 | |
| May 7 | Heavy rain at times | 25° /14° | 5.7 mm | 6 | |
| May 8 | Patchy rain possible | 29° /16° | 1.3 mm | 7 | |
| May 9 | Heavy rain at times | 22° /14° | 4 mm | 5 | |
| May 10 | Sunny | 19° /9° | 12.2 mm | 5 | |
| May 11 | Partly cloudy | 22° /9° | 0.9 mm | 6 | |
| May 12 | Overcast | 23° /11° | 0.9 mm | 5 | |
| May 13 | Moderate or heavy rain shower | 23° /12° | 8.9 mm | 5 | |
| May 14 | Partly cloudy | 22° /14° | 2.4 mm | 5 | |
| May 15 | Partly cloudy | 21° /12° | 10.4 mm | 6 | |
| May 16 | Patchy rain possible | 22° /13° | 3.5 mm | 5 | |
| May 17 | Partly cloudy | 22° /12° | 0.8 mm | 6 | |
| May 18 | Sunny | 19° /10° | 7.5 mm | 5 | |
| May 19 | Patchy rain possible | 22° /12° | 0.2 mm | 5 | |
| May 20 | Overcast | 24° /11° | 1 mm | 6 | |
| May 21 | Partly cloudy | 27° /12° | 0.8 mm | 7 | |
| May 22 | Partly cloudy | 30° /14° | 2.1 mm | 7 | |
| May 23 | Partly cloudy | 24° /14° | 2.6 mm | 6 | |
| May 24 | Overcast | 27° /12° | 0 mm | 6 | |
| May 25 | Sunny | 26° /14° | 0.3 mm | 6 | |
| May 26 | Sunny | 27° /13° | 3.6 mm | 7 | |
| May 27 | Sunny | 26° /14° | 4.7 mm | 6 | |
| May 28 | Moderate or heavy rain shower | 23° /14° | 3.8 mm | 5 | |
| May 29 | Moderate or heavy rain shower | 22° /14° | 5.9 mm | 5 | |
| May 30 | Overcast | 22° /12° | 0.3 mm | 5 | |
| May 31 | Sunny | 25° /10° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Washington in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Washington forecast closer to your planned date for the most up-to-date weather information.
Washington in May - FAQ
What are the expected maximum and minimum temperatures in Washington during May?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Washington during May?
Significant rainfall exceeding 190.9 mm is expected in Washington during May, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Washington during May?
The average wind speed in Washington during May is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Washington
Explore the daily rainfall trends and prepare for Washingtons May weather 💧
UV exposure in Washington during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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