Sonoma County (Santa Rosa)
March
Weather in Sonoma County, California for March 2027
Your guide to Sonoma County weather in March - trends and predictions
In general, the average temperature in Sonoma County at the beginning of March is 12.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 15.3 °C by the end of March.
Sonoma County experiences moderate rainfall in March, with an average of 9 rainy days and a total precipitation of 145.2 mm.
Is March a good time to visit Sonoma County? check out the best time to travel to Sonoma County page.
✨ Is March a good time to visit Sonoma County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
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22
Dry days
9
Rainy days
0
Snow days
16°/6°
Temperatures
14 km/h
Avg max wind
82 %
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 |  Light rain | 11° /8° | 5.9 mm | 2 | |
| Mar. 2 | Light rain | 12° /7° | 4.8 mm | 2 | |
| Mar. 3 |  Light rain shower | 11° /5° | 1.4 mm | 2 | |
| Mar. 4 | Light rain shower | 11° /6° | 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 | 14° /4° | 5.1 mm | 3 | |
| Mar. 11 | Patchy rain possible | 15° /3° | 0.2 mm | 3 | |
| Mar. 12 |  Moderate rain | 15° /6° | 20.8 mm | 3 | |
| Mar. 13 | Light rain | 15° /5° | 4.8 mm | 3 | |
| Mar. 14 | Moderate rain | 16° /6° | 15.7 mm | 4 | |
| Mar. 15 | Sunny | 18° /7° | 0 mm | 4 | |
| Mar. 16 | Moderate rain | 19° /8° | 17.5 mm | 4 | |
| Mar. 17 | Light rain | 20° /6° | 5.8 mm | 4 | |
| Mar. 18 | Sunny | 20° /6° | 0 mm | 4 | |
| Mar. 19 | Patchy rain possible | 19° /5° | 1.9 mm | 4 | |
| Mar. 20 |  Overcast | 20° /6° | 0 mm | 4 | |
| Mar. 21 | Mist | 17° /7° | 0 mm | 3 | |
| Mar. 22 | Light rain | 17° /7° | 4.2 mm | 4 | |
| Mar. 23 | Light rain | 18° /6° | 4.1 mm | 4 | |
| Mar. 24 | Light rain shower | 21° /8° | 0.4 mm | 5 | |
| Mar. 25 |  Partly cloudy | 20° /6° | 0 mm | 6 | |
| Mar. 26 | Light rain | 16° /6° | 3.9 mm | 4 | |
| Mar. 27 | Moderate rain | 15° /8° | 12.3 mm | 3 | |
| Mar. 28 | Light rain shower | 15° /6° | 1.6 mm | 4 | |
| Mar. 29 | Light rain | 13° /6° | 7.1 mm | 2 | |
| Mar. 30 | Light rain | 15° /7° | 6.6 mm | 3 | |
| Mar. 31 | Moderate rain | 13° /8° | 17 mm | 3 | |
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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?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sonoma County during March?
Significant rainfall exceeding 145.2 mm is expected in Sonoma County during March, occurring over more than 9 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 14 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 9 rainy days in March with a total of 145.2 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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