Sonoma County (Santa Rosa)
March
Weather in Sonoma County, California for March 2026
Your guide to Sonoma County weather in March - trends and predictions
Until now, March 2026 in Sonoma County has been significantly warmer than historical averages.
Expect cooler weather in the next days in Sonoma County with the forecast suggesting a temperature of 22.8 °F, lower than the historical average.
In general, the average temperature in Sonoma County at the beginning of March is 12.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.3 °F by the end of March.
Sonoma County experiences heavy rainfall in March, with over 20 rainy days and an average total precipitation 217.2 mm.
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Temperatures
Rain 🌧️
More
10
Dry days
21
Rainy days
0
Snow days
13°/5°
Temperatures
15 km/h
Avg max wind
84 %
Avg humidity
Sonoma County Weather March
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Temperatures trend during March in Sonoma County
See the weather trend as well as the moving average line
March weather in Sonoma County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Mar. 1 |  Fog | 11° /7° | 5.9 mm | 2 | |
| Mar. 2 |  Light rain shower | 12° /7° | 4.8 mm | 2 | |
| Mar. 3 | Light rain shower | 11° /5° | 1.4 mm | 2 | |
| Mar. 4 | Light rain shower | 12° /5° | 1.4 mm | 2 | |
| Mar. 5 | Light rain shower | 14° /5° | 1.5 mm | 3 | |
| Mar. 6 | Light rain shower | 13° /6° | 1 mm | 3 | |
| Mar. 7 | Mist | 14° /2° | 0 mm | 3 | |
| Mar. 8 |  Sunny | 14° /3° | 0 mm | 4 | |
| Mar. 9 | Mist | 15° /5° | 0.1 mm | 3 | |
| Mar. 10 |  Heavy rain | 15° /3° | 5.1 mm | 3 | |
| Mar. 11 | Patchy rain possible | 15° /3° | 0.2 mm | 3 | |
| Mar. 12 |  Light drizzle | 16° /6° | 20.8 mm | 3 | |
| Mar. 13 | Sunny | 15° /5° | 4.8 mm | 3 | |
| Mar. 14 | Sunny | 16° /6° | 15.7 mm | 4 | |
| Mar. 15 | Sunny | 18° /6° | 0 mm | 4 | |
| Mar. 16 | Sunny | 19° /7° | 17.5 mm | 4 | |
| Mar. 17 | Sunny | 20° /6° | 5.8 mm | 4 | |
| Mar. 18 | Sunny | 21° /6° | 0 mm | 4 | |
| Mar. 19 | Sunny | 19° /4° | 1.9 mm | 4 | |
| Mar. 20 |  Overcast | 20° /6° | 0 mm | 4 | |
| Mar. 21 | Sunny | 33° /13° | 0 mm | 1.4 | |
| Mar. 22 |  Partly cloudy | 23° /10° | 0 mm | 1.5 | |
| Mar. 23 | Partly cloudy | 23° /9° | 0 mm | 1.7 | |
| Mar. 24 | Sunny | 25° /11° | 0 mm | 1.7 | |
| Mar. 25 | Sunny | 25° /9° | 0 mm | 0 | |
| Mar. 26 | Partly cloudy | 26° /6° | 0 mm | 4 | |
| Mar. 27 | Partly cloudy | 27° /10° | 0 mm | 5 | |
| Mar. 28 | Partly cloudy | 28° /12° | 0 mm | 5 | |
| Mar. 29 | Sunny | 24° /10° | 0 mm | 5 | |
| Mar. 30 | Patchy rain possible | 19° /4° | 0.2 mm | 3 | |
| Mar. 31 | Patchy rain possible | 14° /4° | 4.6 mm | 2 | |
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Important Notice
Our weather forecast for Sonoma County in March 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.
Change Month
Sonoma County in March - FAQ
What are the expected maximum and minimum temperatures in Sonoma County during March?
During March, expect a variety of temperatures with highs around 13° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sonoma County during March?
Significant rainfall exceeding 217.2 mm is expected in Sonoma County during March, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sonoma County during March?
The average wind speed in Sonoma County during March is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
March rainfall patterns in Sonoma County
Explore the daily rainfall trends and prepare for Sonoma Countys March weather 💧
Typically, Sonoma County has 21 rainy days in March with a total of 217.2 mm of rainfall.
UV exposure in Sonoma County during March
Stay informed about UV levels for safe outdoor activities throughout the month of March ☀️
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