Grass Valley (CA)
October
Weather in Grass Valley, California for October 2026
Your guide to Grass Valley weather in October - trends and predictions
In general, the average temperature in Grass Valley at the beginning of October is 26.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °C by the end of October.
The climate of Grass Valley in October is notably wet, with an average of 12 rainy days, and a total of 134.9 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
12
Rainy days
0
Snow days
22°/12°
Temperatures
12 km/h
Avg max wind
48 %
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
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| 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 | Overcast | 18° /11° | 11.1 mm | 4 | |
| Oct. 26 | Sunny | 18° /9° | 10.2 mm | 5 | |
| Oct. 27 | Moderate rain at times | 20° /10° | 2.1 mm | 5 | |
| Oct. 28 | Partly cloudy | 18° /9° | 0.3 mm | 5 | |
| Oct. 29 | Sunny | 22° /10° | 0 mm | 6 | |
| Oct. 30 | Overcast | 18° /11° | 0 mm | 5 | |
| Oct. 31 |  Light rain | 11° /6° | 21 mm | 3 | |
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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.
Change Month
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 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Grass Valley during October?
Significant rainfall exceeding 134.9 mm is expected in Grass Valley during October, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
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 💧
Typically, Grass Valley has 12 rainy days in October with a total of 134.9 mm of rainfall.
UV exposure in Grass Valley during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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