King County (Seattle)
October
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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23
Dry days
8
Rainy days
0
Snow days
17°/7°
Temperatures
10 km/h
Avg max wind
74 %
Avg humidity
King County in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2  13° | 3  17° | 4 17° | 5 19° | ||
| 6  24° | 7  25° | 8 21° | 9 15° | 10 14° | 11 17° | 12  22° |
| 13  22° | 14 17° | 15 18° | 16  15° | 17 14° | 18 17° | 19 20° |
| 20 17° | 21 14° | 22 16° | 23 10° | 24 12° | 25 11° | 26 11° |
| 27 11° | 28 12° | 29 12° | 30 12° | 31 14° |
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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 | 18° /7° | 0 mm | 4 | |
| Oct. 2 | Light drizzle | 13° /9° | 0.7 mm | 3 | |
| Oct. 3 | Patchy rain possible | 17° /7° | 0.1 mm | 5 | |
| Oct. 4 | Mist | 17° /10° | 6.9 mm | 4 | |
| Oct. 5 | Mist | 19° /10° | 0 mm | 5 | |
| Oct. 6 | Partly cloudy | 24° /8° | 0 mm | 7 | |
| Oct. 7 | Sunny | 25° /11° | 0 mm | 6 | |
| Oct. 8 | Sunny | 21° /13° | 1.6 mm | 5 | |
| Oct. 9 | Light rain shower | 15° /10° | 4.2 mm | 4 | |
| Oct. 10 | Light rain | 14° /8° | 3.5 mm | 3 | |
| Oct. 11 | Light rain shower | 17° /8° | 5.1 mm | 4 | |
| Oct. 12 | Cloudy | 22° /8° | 0 mm | 5 | |
| Oct. 13 | Overcast | 22° /10° | 0 mm | 5 | |
| Oct. 14 | Light rain shower | 17° /11° | 5.9 mm | 4 | |
| Oct. 15 | Patchy rain possible | 18° /12° | 4 mm | 5 | |
| Oct. 16 | Moderate rain | 15° /9° | 8.7 mm | 4 | |
| Oct. 17 | Patchy rain possible | 14° /8° | 0.6 mm | 4 | |
| Oct. 18 | Sunny | 17° /8° | 0 mm | 5 | |
| Oct. 19 | Sunny | 20° /10° | 0 mm | 5 | |
| Oct. 20 | Mist | 17° /11° | 3.6 mm | 4 | |
| Oct. 21 | Mist | 14° /9° | 0 mm | 4 | |
| Oct. 22 | Overcast | 16° /8° | 0 mm | 4 | |
| Oct. 23 | Patchy rain possible | 10° /7° | 0.1 mm | 3 | |
| Oct. 24 | Light rain shower | 12° /5° | 13 mm | 3 | |
| Oct. 25 | Patchy rain possible | 11° /3° | 3.4 mm | 3 | |
| Oct. 26 | Overcast | 11° /5° | 7.6 mm | 3 | |
| Oct. 27 | Sunny | 11° /5° | 24.3 mm | 3 | |
| Oct. 28 | Sunny | 12° /4° | 6.3 mm | 4 | |
| Oct. 29 | Sunny | 12° /4° | 0 mm | 4 | |
| Oct. 30 | Partly cloudy | 12° /4° | 11 mm | 4 | |
| Oct. 31 | 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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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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