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Weather in Grass Valley, California for October 2025

Your guide to Grass Valley weather in October - trends and predictions

    Official Weather Alert ⚠️

  • Wind Advisory - See hour by hour.

  • Temperatures

  • Until now, October 2025 in Grass Valley is cooler than usual, with temperatures averaging 20.6 °F, this is -3.5 °F below the typical seasonal average.

  • The forecast for the next days in Grass Valley predicts temperatures to be around 20 °F, close to the historical average.

  • In general, the average temperature in Grass Valley at the beginning of October is 26.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20 °F by the end of October.

  • Rain 🌧️

  • Grass Valley experiences moderate rainfall in October, with an average of 7 rainy days and a total precipitation of 79 mm.

  • More

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Average dry days
24
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/13°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
37 %
Avg humidity

Grass Valley Weather October

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Temperatures trend during October in Grass Valley

See the weather trend as well as the moving average line

October weather in Grass Valley day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
Oct. 1 Moderate rain at times
Moderate rain at times
16° /14° 32.6 mm 4
Oct. 2 Moderate rain at times
Moderate rain at times
17° /13° 3.8 mm 4
Oct. 3 Sunny
Sunny
27° /16° 1.5 mm 7
Oct. 4 Cloudy
Cloudy
28° /17° 0 mm 7
Oct. 5 Sunny
Sunny
31° /16° 0 mm 8
Oct. 6 Sunny
Sunny
33° /18° 0 mm 8
Oct. 7 Partly cloudy
Partly cloudy
33° /18° 0 mm 9
Oct. 8 Sunny
Sunny
32° /18° 0 mm 8
Oct. 9 Partly cloudy
Partly cloudy
26° /14° 0 mm 7
Oct. 10 Cloudy
Cloudy
26° /14° 0 mm 7
Oct. 11 Sunny
Sunny
22° /12° 0 mm 6
Oct. 12 Partly cloudy
Partly cloudy
21° /12° 0 mm 6
Oct. 13 Sunny
Sunny
20° /10° 38.2 mm 5
Oct. 14 Sunny
Sunny
19° /10° 3.8 mm 5
Oct. 15 Sunny
Sunny
20° /10° 1.8 mm 5
Oct. 16 Moderate or heavy rain shower
Moderate or heavy rain shower
20° /9° 4.5 mm 5
Oct. 17 Moderate or heavy rain shower
Moderate or heavy rain shower
21° /10° 3.9 mm 5
Oct. 18 Sunny
Sunny
24° /10° 0 mm 6
Oct. 19 Sunny
Sunny
25° /13° 0 mm 7
Oct. 20 Cloudy
Cloudy
24° /9° 0 mm 6
Oct. 21 Partly cloudy
Partly cloudy
25° /13° 0 mm 7
Oct. 22 Overcast
Overcast
22° /12° 0 mm 5
Oct. 23 Sunny
Sunny
22° /10° 0 mm 6
Oct. 24 Sunny
Sunny
21° /11° 0 mm 5
Oct. 25 Patchy rain possible
Patchy rain possible
13° /10° 3.5 mm 0.1
Oct. 26 Moderate rain
Moderate rain
11° /10° 6.3 mm 0.1
Oct. 27 Sunny
Sunny
21° /9° 0 mm 0.9
Oct. 28 Sunny
Sunny
24° /13° 0 mm 0.9
Oct. 29 Sunny
Sunny
24° /13° 0 mm 0
Oct. 30 Sunny
Sunny
24° /13° 0 mm 5
Oct. 31 Sunny
Sunny
23° /13° 0 mm 5
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Important Notice
Our weather forecast for Grass Valley 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 Grass Valley forecast closer to your planned date for the most up-to-date weather information.

Grass Valley in October - FAQ

What are the expected maximum and minimum temperatures in Grass Valley during October?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Grass Valley during October?
Moderate rainfall is anticipated in Grass Valley during October, with a total of 79 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Grass Valley during October?
The average wind speed in Grass Valley during October is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

October rainfall patterns in Grass Valley

Explore the daily rainfall trends and prepare for Grass Valleys October weather 💧

UV exposure in Grass Valley during October

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

Quick links

More Grass Valley weather pages
Location coordinates Where is Grass Valley?

Get accurate weather forecasts for Grass Valley, located at latitude 39.219 and longitude -121.061. Stay updated with localized weather information tailored for Grass Valley.

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