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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 14.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.3 °F by the end of May.

  • King County sees moderate rainfall in May, averaging 6 rainy days.

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Average dry days
25
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/7°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
69 %
Avg humidity

King County in May average weather

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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 Overcast
Overcast
14° /5° 0.6 mm 3
May 2 Overcast
Overcast
19° /4° 0.2 mm 5
May 3 Partly cloudy
Partly cloudy
21° /6° 2.5 mm 5
May 4 Patchy rain possible
Patchy rain possible
13° /8° 2.5 mm 4
May 5 Moderate or heavy rain shower
Moderate or heavy rain shower
10° /6° 12.3 mm 3
May 6 Patchy rain possible
Patchy rain possible
12° /6° 3.4 mm 3
May 7 Patchy rain possible
Patchy rain possible
13° /5° 0.5 mm 3
May 8 Patchy rain possible
Patchy rain possible
16° /4° 0.2 mm 4
May 9 Patchy rain possible
Patchy rain possible
19° /6° 0.1 mm 5
May 10 Sunny
Sunny
24° /7° 0 mm 7
May 11 Overcast
Overcast
24° /9° 0 mm 6
May 12 Partly cloudy
Partly cloudy
25° /8° 0 mm 7
May 13 Sunny
Sunny
20° /9° 1.3 mm 5
May 14 Sunny
Sunny
24° /10° 0 mm 6
May 15 Patchy rain possible
Patchy rain possible
27° /11° 0.2 mm 7
May 16 Sunny
Sunny
22° /11° 0.4 mm 6
May 17 Sunny
Sunny
23° /10° 0.5 mm 6
May 18 Sunny
Sunny
21° /10° 2.6 mm 5
May 19 Sunny
Sunny
21° /8° 0.2 mm 6
May 20 Sunny
Sunny
23° /8° 0 mm 6
May 21 Patchy rain possible
Patchy rain possible
14° /9° 10.9 mm 4
May 22 Patchy rain possible
Patchy rain possible
15° /7° 8.5 mm 4
May 23 Overcast
Overcast
18° /7° 0.5 mm 4
May 24 Overcast
Overcast
20° /6° 0 mm 6
May 25 Sunny
Sunny
19° /7° 2.7 mm 5
May 26 Sunny
Sunny
20° /9° 0.5 mm 5
May 27 Overcast
Overcast
21° /8° 0 mm 6
May 28 Cloudy
Cloudy
16° /8° 1.2 mm 4
May 29 Patchy rain possible
Patchy rain possible
17° /7° 2.8 mm 4
May 30 Patchy rain possible
Patchy rain possible
17° /7° 0.4 mm 4
May 31 Patchy rain possible
Patchy rain possible
18° /6° 0.1 mm 4
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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 22° 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 96 mm spread over approximately 6 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 13 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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Location coordinates 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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