King County (Seattle)
May
Weather in King County for May 2025
Your guide to King County weather in May - trends and predictions
In general, the average temperature in King County at the beginning of May is 14.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.1 °F by the end of May.
King County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 82.5 mm.
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Temperatures
Rain 🌧️
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6
Dry days
25
Rainy days
0
Snow days
17°/7°
Temperatures
12 km/h
Avg max wind
71 %
Avg humidity
King County in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  16° | 3  17° | 4 15° | |||
| 5 13° | 6 13° | 7 12° | 8 14° | 9  16° | 10  20° | 11 21° |
| 12  20° | 13 19° | 14 21° | 15 23° | 16 21° | 17 20° | 18 18° |
| 19 18° | 20 20° | 21 16° | 22 18° | 23 17° | 24 18° | 25 18° |
| 26 19° | 27 18° | 28 15° | 29 18° | 30 18° | 31 21° |
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Temperatures trend during May in King County
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 | 15° /5° | 1.6 mm | 3 | |
| May 2 | Cloudy | 16° /5° | 2.8 mm | 4 | |
| May 3 | Moderate rain at times | 17° /6° | 2.1 mm | 4 | |
| May 4 | Patchy rain possible | 15° /6° | 1.6 mm | 4 | |
| May 5 | Moderate or heavy rain shower | 13° /6° | 9.2 mm | 3 | |
| May 6 | Patchy rain possible | 13° /6° | 5.3 mm | 3 | |
| May 7 | Moderate or heavy rain shower | 12° /5° | 7.7 mm | 3 | |
| May 8 | Patchy rain possible | 14° /4° | 1.1 mm | 4 | |
| May 9 | Overcast | 16° /6° | 1.6 mm | 4 | |
| May 10 | Sunny | 20° /6° | 0.3 mm | 5 | |
| May 11 | Sunny | 21° /7° | 0.1 mm | 5 | |
| May 12 | Partly cloudy | 20° /7° | 3.9 mm | 5 | |
| May 13 | Cloudy | 19° /7° | 1.1 mm | 5 | |
| May 14 | Sunny | 21° /9° | 1.5 mm | 5 | |
| May 15 | Sunny | 23° /10° | 4.2 mm | 6 | |
| May 16 | Partly cloudy | 21° /9° | 1 mm | 5 | |
| May 17 | Patchy rain possible | 20° /8° | 1 mm | 5 | |
| May 18 | Moderate or heavy rain shower | 18° /8° | 6.5 mm | 5 | |
| May 19 | Patchy rain possible | 18° /6° | 1.3 mm | 4 | |
| May 20 | Sunny | 20° /5° | 0.1 mm | 5 | |
| May 21 | Patchy rain possible | 16° /7° | 5.5 mm | 4 | |
| May 22 | Partly cloudy | 18° /7° | 4.3 mm | 5 | |
| May 23 | Patchy rain possible | 17° /8° | 0.7 mm | 4 | |
| May 24 | Moderate rain at times | 18° /7° | 1.8 mm | 5 | |
| May 25 | Patchy rain possible | 18° /8° | 2.1 mm | 4 | |
| May 26 | Partly cloudy | 19° /9° | 1.4 mm | 5 | |
| May 27 | Moderate or heavy rain shower | 18° /8° | 4.8 mm | 5 | |
| May 28 | Patchy rain possible | 15° /8° | 2.4 mm | 4 | |
| May 29 | Partly cloudy | 18° /7° | 4.8 mm | 4 | |
| May 30 | Patchy rain possible | 18° /7° | 0.7 mm | 5 | |
| May 31 | Partly cloudy | 21° /7° | 0.1 mm | 5 | |
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Important Notice
Our weather forecast for King County 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 King County forecast closer to your planned date for the most up-to-date weather information.
King County in May - FAQ
What are the expected maximum and minimum temperatures in King County during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in King County during May?
Moderate rainfall is anticipated in King County during May, with a total of 82.5 mm spread over approximately 25 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in King County during May?
The average wind speed in King County during May is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in King County
Explore the daily rainfall trends and prepare for King Countys May weather 💧
UV exposure in King County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is King County?Get accurate weather forecasts for King County, located at latitude 47.606 and longitude -122.332. Stay updated with localized weather information tailored for King County.
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