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Weather in Sonoma County for January 2025

Your guide to Sonoma County weather in January - trends and predictions
  • In general, the average temperature in Sonoma County at the beginning of January is 12.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 16.7 °F by the end of January.

  • The climate of Sonoma County in January is notably wet, with an average of 13 rainy days.

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Average dry days
18
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
14°/6°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Sonoma County in January average weather

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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
Sunny
15° /5° 0 mm 5
Jan. 2 Overcast
Overcast
13° /6° 18.7 mm 3
Jan. 3 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
10° /4° 17.9 mm 3
Jan. 4 Partly cloudy
Partly cloudy
13° /3° 0 mm 4
Jan. 5 Mist
Mist
14° /4° 0 mm 3
Jan. 6 Light rain shower
Light rain shower
11° /5° 5.5 mm 3
Jan. 7 Sunny
Sunny
12° /0° 0 mm 4
Jan. 8 Overcast
Overcast
12° /1° 0 mm 3
Jan. 9 Light drizzle
Light drizzle
11° /4° 0.6 mm 3
Jan. 10 Light rain shower
Light rain shower
11° /3° 1.5 mm 3
Jan. 11 Partly cloudy
Partly cloudy
11° /1° 0 mm 4
Jan. 12 Partly cloudy
Partly cloudy
11° /2° 0 mm 4
Jan. 13 Moderate rain
Moderate rain
12° /5° 28.9 mm 3
Jan. 14 Patchy rain possible
Patchy rain possible
14° /8° 0.2 mm 3
Jan. 15 Partly cloudy
Partly cloudy
14° /6° 0 mm 4
Jan. 16 Light rain
Light rain
10° /6° 9.7 mm 3
Jan. 17 Mist
Mist
15° /7° 0.1 mm 4
Jan. 18 Partly cloudy
Partly cloudy
14° /6° 0 mm 4
Jan. 19 Light rain shower
Light rain shower
13° /7° 14.8 mm 3
Jan. 20 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
12° /9° 53.1 mm 3
Jan. 21 Light drizzle
Light drizzle
12° /9° 1.8 mm 3
Jan. 22 Light rain shower
Light rain shower
15° /9° 21.9 mm 4
Jan. 23 Mist
Mist
15° /7° 0 mm 4
Jan. 24 Moderate rain
Moderate rain
11° /7° 5.3 mm 3
Jan. 25 Mist
Mist
15° /6° 0.1 mm 4
Jan. 26 Patchy rain possible
Patchy rain possible
15° /9° 0 mm 4
Jan. 27 Patchy rain possible
Patchy rain possible
18° /9° 0.1 mm 4
Jan. 28 Sunny
Sunny
21° /10° 0 mm 6
Jan. 29 Sunny
Sunny
19° /10° 0 mm 5
Jan. 30 Partly cloudy
Partly cloudy
17° /10° 0 mm 5
Jan. 31 Moderate rain
Moderate rain
12° /10° 49 mm 3
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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 14° 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 13 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

Explore the daily rainfall trends and prepare for Sonoma Countys January weather 💧

UV exposure in Sonoma County during January

Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️
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Location coordinates 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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