Sonoma County (Santa Rosa)
January
Weather in Sonoma County for January 2025
Your guide to Sonoma County weather in January - trends and predictions
Until now, January 2025 in Sonoma County has been nearly identical to the historical average, with a temperature of 13.3 °F (showing only a slight deviation of 0.1 °F).
The forecast for the next days in Sonoma County predicts temperatures to be around 16 °F, close to the historical average.
In general, the average temperature in Sonoma County at the beginning of January is 13.1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 14.9 °F by the end of January.
The climate of Sonoma County in January is notably wet, with an average of 12 rainy days, and a total of 229.2 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
12
Rainy days
0
Snow days
13°/6°
Temperatures
11 km/h
Avg max wind
83 %
Avg humidity
Sonoma County in January average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  13° | 2  14° | 3  11° | 4  12° | |||
| 5  15° | 6  13° | 7 14° | 8 15° | 9  14° | 10 13° | 11 14° |
| 12 13° | 13  13° | 14 15° | 15 16° | 16 13° | 17 11° | 18 11° |
| 19 11° | 20 12° | 21 18° | 22 20° | 23 20° | 24 16° | 25 13° |
| 26 12° | 27 13° | 28 14° | 29 15° | 30 18° | 31 19° |
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Temperatures trend during January in Sonoma County
See the weather trend as well as the moving average line
January weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 | Sunny | 13° /4° | 0 mm | 4 | |
| Jan. 2 | Overcast | 14° /7° | 9.4 mm | 3 | |
| Jan. 3 | Moderate or heavy rain with thunder | 11° /6° | 24.4 mm | 3 | |
| Jan. 4 | Partly cloudy | 12° /4° | 0 mm | 4 | |
| Jan. 5 | Mist | 15° /3° | 0 mm | 4 | |
| Jan. 6 | Light rain shower | 13° /6° | 3.2 mm | 3 | |
| Jan. 7 | Sunny | 14° /3° | 0 mm | 5 | |
| Jan. 8 | Overcast | 15° /4° | 0 mm | 4 | |
| Jan. 9 | Light drizzle | 14° /3° | 0.3 mm | 4 | |
| Jan. 10 | Light rain shower | 13° /4° | 0.7 mm | 4 | |
| Jan. 11 | Partly cloudy | 14° /3° | 0 mm | 5 | |
| Jan. 12 | Partly cloudy | 13° /3° | 0 mm | 4 | |
| Jan. 13 | Moderate rain | 13° /3° | 14.5 mm | 4 | |
| Jan. 14 | Patchy rain possible | 15° /6° | 0.1 mm | 4 | |
| Jan. 15 | Partly cloudy | 16° /3° | 0 mm | 4 | |
| Jan. 16 | Light rain | 13° /5° | 4.9 mm | 4 | |
| Jan. 17 | Mist | 11° /4° | 0 mm | 3 | |
| Jan. 18 | Partly cloudy | 11° /5° | 0 mm | 3 | |
| Jan. 19 | Light rain shower | 11° /5° | 7.4 mm | 3 | |
| Jan. 20 | Moderate or heavy rain with thunder | 12° /9° | 53.1 mm | 3 | |
| Jan. 21 | Sunny | 18° /5° | 0 mm | 0.5 | |
| Jan. 22 | Sunny | 20° /4° | 0 mm | 0.5 | |
| Jan. 23 | Sunny | 20° /7° | 0 mm | 0.5 | |
| Jan. 24 | Partly cloudy | 16° /5° | 0 mm | 0.5 | |
| Jan. 25 | Sunny | 13° /1° | 0 mm | 0 | |
| Jan. 26 | Sunny | 12° /1° | 0 mm | 3 | |
| Jan. 27 | Sunny | 13° /1° | 0 mm | 3 | |
| Jan. 28 | Sunny | 14° /2° | 0 mm | 3 | |
| Jan. 29 | Sunny | 15° /3° | 0 mm | 3 | |
| Jan. 30 | Sunny | 18° /4° | 0 mm | 3 | |
| Jan. 31 | Sunny | 19° /5° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Sonoma County 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 Sonoma County forecast closer to your planned date for the most up-to-date weather information.
Sonoma County in January - FAQ
What are the expected maximum and minimum temperatures in Sonoma County during January?
During January, expect a variety of temperatures with highs around 13° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sonoma County during January?
Significant rainfall exceeding 229.2 mm is expected in Sonoma County during January, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sonoma County during January?
The average wind speed in Sonoma County during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Sonoma County
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Where is Sonoma County?Get accurate weather forecasts for Sonoma County, located at latitude 38.44 and longitude -122.714. Stay updated with localized weather information tailored for Sonoma County.
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