Weather in Grass Valley, California for October 2025
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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.
Grass Valley experiences moderate rainfall in October, with an average of 7 rainy days and a total precipitation of 79 mm.
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Grass Valley Weather October
Temperatures trend during October in Grass Valley
October weather in Grass Valley day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Moderate rain at times | 16° /14° | 32.6 mm | 4 | |
| Oct. 2 | Moderate rain at times | 17° /13° | 3.8 mm | 4 | |
| Oct. 3 |  Sunny | 27° /16° | 1.5 mm | 7 | |
| Oct. 4 |  Cloudy | 28° /17° | 0 mm | 7 | |
| Oct. 5 | Sunny | 31° /16° | 0 mm | 8 | |
| Oct. 6 | Sunny | 33° /18° | 0 mm | 8 | |
| Oct. 7 |  Partly cloudy | 33° /18° | 0 mm | 9 | |
| Oct. 8 | Sunny | 32° /18° | 0 mm | 8 | |
| Oct. 9 | Partly cloudy | 26° /14° | 0 mm | 7 | |
| Oct. 10 | Cloudy | 26° /14° | 0 mm | 7 | |
| Oct. 11 | Sunny | 22° /12° | 0 mm | 6 | |
| Oct. 12 | Partly cloudy | 21° /12° | 0 mm | 6 | |
| Oct. 13 | Sunny | 20° /10° | 38.2 mm | 5 | |
| Oct. 14 | Sunny | 19° /10° | 3.8 mm | 5 | |
| Oct. 15 | Sunny | 20° /10° | 1.8 mm | 5 | |
| Oct. 16 | Moderate or heavy rain shower | 20° /9° | 4.5 mm | 5 | |
| Oct. 17 | Moderate or heavy rain shower | 21° /10° | 3.9 mm | 5 | |
| Oct. 18 | Sunny | 24° /10° | 0 mm | 6 | |
| Oct. 19 | Sunny | 25° /13° | 0 mm | 7 | |
| Oct. 20 | Cloudy | 24° /9° | 0 mm | 6 | |
| Oct. 21 | Partly cloudy | 25° /13° | 0 mm | 7 | |
| Oct. 22 |  Overcast | 22° /12° | 0 mm | 5 | |
| Oct. 23 | Sunny | 22° /10° | 0 mm | 6 | |
| Oct. 24 | Sunny | 21° /11° | 0 mm | 5 | |
| Oct. 25 |  Patchy rain possible | 13° /10° | 3.5 mm | 0.1 | |
| Oct. 26 |  Moderate rain | 11° /10° | 6.3 mm | 0.1 | |
| Oct. 27 | Sunny | 21° /9° | 0 mm | 0.9 | |
| Oct. 28 | Sunny | 24° /13° | 0 mm | 0.9 | |
| Oct. 29 | Sunny | 24° /13° | 0 mm | 0 | |
| Oct. 30 | Sunny | 24° /13° | 0 mm | 5 | |
| Oct. 31 | Sunny | 23° /13° | 0 mm | 5 | |
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Grass Valley in October - FAQ
October rainfall patterns in Grass Valley
UV exposure in Grass Valley during October
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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.