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Weather in King County for October 2025

Your guide to King County weather in October - trends and predictions
  • In general, the average temperature in King County at the beginning of October is 19 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.9 °F by the end of October.

  • King County sees moderate rainfall in October, averaging 8 rainy days.

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Average dry days
23
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/7°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
74 %
Avg humidity

King County in October average weather

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Temperatures trend during October in King County

See the weather trend as well as the moving average line

October weather day by day

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Date Weather Temperatures Rain UV More
Oct. 1 Mist
Mist
18° /7° 0 mm 4
Oct. 2 Light drizzle
Light drizzle
13° /9° 0.7 mm 3
Oct. 3 Patchy rain possible
Patchy rain possible
17° /7° 0.1 mm 5
Oct. 4 Mist
Mist
17° /10° 6.9 mm 4
Oct. 5 Mist
Mist
19° /10° 0 mm 5
Oct. 6 Partly cloudy
Partly cloudy
24° /8° 0 mm 7
Oct. 7 Sunny
Sunny
25° /11° 0 mm 6
Oct. 8 Sunny
Sunny
21° /13° 1.6 mm 5
Oct. 9 Light rain shower
Light rain shower
15° /10° 4.2 mm 4
Oct. 10 Light rain
Light rain
14° /8° 3.5 mm 3
Oct. 11 Light rain shower
Light rain shower
17° /8° 5.1 mm 4
Oct. 12 Cloudy
Cloudy
22° /8° 0 mm 5
Oct. 13 Overcast
Overcast
22° /10° 0 mm 5
Oct. 14 Light rain shower
Light rain shower
17° /11° 5.9 mm 4
Oct. 15 Patchy rain possible
Patchy rain possible
18° /12° 4 mm 5
Oct. 16 Moderate rain
Moderate rain
15° /9° 8.7 mm 4
Oct. 17 Patchy rain possible
Patchy rain possible
14° /8° 0.6 mm 4
Oct. 18 Sunny
Sunny
17° /8° 0 mm 5
Oct. 19 Sunny
Sunny
20° /10° 0 mm 5
Oct. 20 Mist
Mist
17° /11° 3.6 mm 4
Oct. 21 Mist
Mist
14° /9° 0 mm 4
Oct. 22 Overcast
Overcast
16° /8° 0 mm 4
Oct. 23 Patchy rain possible
Patchy rain possible
10° /7° 0.1 mm 3
Oct. 24 Light rain shower
Light rain shower
12° /5° 13 mm 3
Oct. 25 Patchy rain possible
Patchy rain possible
11° /3° 3.4 mm 3
Oct. 26 Overcast
Overcast
11° /5° 7.6 mm 3
Oct. 27 Sunny
Sunny
11° /5° 24.3 mm 3
Oct. 28 Sunny
Sunny
12° /4° 6.3 mm 4
Oct. 29 Sunny
Sunny
12° /4° 0 mm 4
Oct. 30 Partly cloudy
Partly cloudy
12° /4° 11 mm 4
Oct. 31 Overcast
Overcast
14° /4° 2.5 mm 4
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Important Notice
Our weather forecast for King County in October 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 October - FAQ

What are the expected maximum and minimum temperatures in King County during October?
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 October?
Moderate rainfall is anticipated in King County during October, with a total of 77.8 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in King County during October?
The average wind speed in King County during October is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

October rainfall patterns in King County

Explore the daily rainfall trends and prepare for King Countys October weather 💧

UV exposure in King County during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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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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