Grass Valley (CA)
January
Weather in Grass Valley, California for January 2026
Your guide to Grass Valley weather in January - trends and predictions
In general, the average temperature in Grass Valley at the beginning of January is 11.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 10.3 °F by the end of January.
With an average of 4 rainy days, Grass Valley experiences minimal rainfall in January.
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Temperatures
Rain 🌧️
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27
Dry days
4
Rainy days
0
Snow days
13°/4°
Temperatures
11 km/h
Avg max wind
54 %
Avg humidity
Grass Valley Weather January
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Temperatures trend during January in Grass Valley
See the weather trend as well as the moving average line
January weather in Grass Valley day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Overcast | 10° /4° | 0 mm | 3 | |
| Jan. 2 | Overcast | 16° /9° | 0 mm | 4 | |
| Jan. 3 |  Moderate or heavy rain shower | 11° /6° | 54.5 mm | 3 | |
| Jan. 4 | Overcast | 9° /3° | 0.2 mm | 2 | |
| Jan. 5 |  Partly cloudy | 12° /4° | 0 mm | 4 | |
| Jan. 6 | Overcast | 11° /4° | 0.7 mm | 3 | |
| Jan. 7 |  Sunny | 14° /3° | 0 mm | 4 | |
| Jan. 8 | Partly cloudy | 15° /2° | 0 mm | 5 | |
| Jan. 9 | Sunny | 18° /6° | 0 mm | 5 | |
| Jan. 10 | Sunny | 14° /5° | 0 mm | 4 | |
| Jan. 11 | Sunny | 15° /4° | 0 mm | 5 | |
| Jan. 12 | Sunny | 13° /2° | 0 mm | 4 | |
| Jan. 13 | Sunny | 13° /3° | 0 mm | 4 | |
| Jan. 14 | Sunny | 14° /4° | 0 mm | 4 | |
| Jan. 15 | Sunny | 13° /4° | 0 mm | 4 | |
| Jan. 16 | Sunny | 14° /3° | 0 mm | 4 | |
| Jan. 17 | Sunny | 13° /3° | 0 mm | 4 | |
| Jan. 18 | Sunny | 10° /0° | 0 mm | 4 | |
| Jan. 19 | Sunny | 11° /1° | 0 mm | 4 | |
| Jan. 20 | Sunny | 14° /3° | 0 mm | 4 | |
| Jan. 21 | Sunny | 12° /2° | 0 mm | 4 | |
| Jan. 22 | Sunny | 18° /3° | 0 mm | 5 | |
| Jan. 23 | Sunny | 16° /8° | 0 mm | 5 | |
| Jan. 24 | Overcast | 14° /5° | 0 mm | 3 | |
| Jan. 25 |  Patchy rain possible | 11° /3° | 0.4 mm | 3 | |
| Jan. 26 |  Cloudy | 9° /2° | 0 mm | 2 | |
| Jan. 27 | Sunny | 13° /3° | 0 mm | 4 | |
| Jan. 28 | Sunny | 11° /2° | 0 mm | 4 | |
| Jan. 29 | Sunny | 11° /2° | 0 mm | 4 | |
| Jan. 30 | Cloudy | 10° /1° | 0 mm | 3 | |
| Jan. 31 |  Moderate rain | 7° /6° | 14.2 mm | 2 | |
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Important Notice
Our weather forecast for Grass Valley in January 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.
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Grass Valley in January - FAQ
What are the expected maximum and minimum temperatures in Grass Valley during January?
Prepare for cooler days with highs just around 13° and colder nights, dipping below 4°.
How much rainfall should be expected in Grass Valley during January?
Moderate rainfall is anticipated in Grass Valley during January, with a total of 70 mm spread over approximately 4 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Grass Valley during January?
The average wind speed in Grass Valley during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Grass Valley
Explore the daily rainfall trends and prepare for Grass Valleys January weather 💧
Typically, Grass Valley has 4 rainy days in January with a total of 70 mm of rainfall.
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