San Mateo County (San Mateo)
March
Weather in San Mateo County, California for March 2026
Your guide to San Mateo County weather in March - trends and predictions
Heat Advisory - See hour by hour.
So far, March 2026 in San Mateo County is slightly warmer than the historical average by 1.8 °F.
The forecast for the coming days of March 2026 predicts a temperature of 19.3 °F , which is warmer than usual.
In general, the average temperature in San Mateo County at the beginning of March is 12.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 15.7 °F by the end of March.
The climate of San Mateo County in March is notably wet, with an average of 11 rainy days, and a total of 85 mm of precipitation.
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Temperatures
Rain 🌧️
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20
Dry days
11
Rainy days
0
Snow days
13°/8°
Temperatures
21 km/h
Avg max wind
84 %
Avg humidity
San Mateo County Weather March
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Temperatures trend during March in San Mateo County
See the weather trend as well as the moving average line
March weather in San Mateo County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Mar. 1 |  Overcast | 13° /9° | 0.3 mm | 2 | |
| Mar. 2 |  Moderate or heavy rain shower | 13° /10° | 4 mm | 2 | |
| Mar. 3 | Overcast | 12° /9° | 0 mm | 2 | |
| Mar. 4 |  Patchy rain possible | 14° /9° | 0.1 mm | 3 | |
| Mar. 5 | Moderate rain at times | 14° /7° | 2.8 mm | 3 | |
| Mar. 6 | Patchy rain possible | 10° /7° | 1.4 mm | 3 | |
| Mar. 7 | Overcast | 12° /6° | 0 mm | 3 | |
| Mar. 8 | Overcast | 13° /6° | 0 mm | 3 | |
| Mar. 9 | Overcast | 14° /8° | 0 mm | 2 | |
| Mar. 10 | Overcast | 15° /8° | 0 mm | 4 | |
| Mar. 11 | Overcast | 16° /7° | 0 mm | 4 | |
| Mar. 12 | Moderate or heavy rain shower | 16° /7° | 7.6 mm | 3 | |
| Mar. 13 | Moderate or heavy rain shower | 11° /8° | 5.2 mm | 2 | |
| Mar. 14 | Moderate or heavy rain shower | 13° /7° | 7.4 mm | 2 | |
| Mar. 15 |  Partly cloudy | 16° /9° | 0 mm | 4 | |
| Mar. 16 |  Sunny | 31° /12° | 0 mm | 1.4 | |
| Mar. 17 | Sunny | 27° /12° | 0 mm | 0 | |
| Mar. 18 | Partly cloudy | 26° /11° | 0 mm | 5 | |
| Mar. 19 | Sunny | 23° /12° | 0 mm | 5 | |
| Mar. 20 | Sunny | 22° /13° | 0 mm | 5 | |
| Mar. 21 | Partly cloudy | 20° /12° | 0 mm | 5 | |
| Mar. 22 | Sunny | 15° /9° | 0 mm | 4 | |
| Mar. 23 |  Cloudy | 12° /9° | 0 mm | 3 | |
| Mar. 24 | Patchy rain possible | 11° /9° | 0.2 mm | 2 | |
| Mar. 25 | Sunny | 13° /6° | 0 mm | 3 | |
| Mar. 26 | Sunny | 16° /7° | 0 mm | 4 | |
| Mar. 27 | Sunny | 20° /9° | 0 mm | 4 | |
| Mar. 28 | Partly cloudy | 19° /12° | 0 mm | 5 | |
| Mar. 29 | Patchy rain possible | 15° /10° | 1.7 mm | 3 | |
| Mar. 30 | Overcast | 13° /9° | 0 mm | 3 | |
| Mar. 31 | Moderate or heavy rain shower | 14° /10° | 18.1 mm | 3 | |
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Important Notice
Our weather forecast for San Mateo 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 San Mateo County forecast closer to your planned date for the most up-to-date weather information.
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San Mateo County in March - FAQ
What are the expected maximum and minimum temperatures in San Mateo County during March?
During March, expect a variety of temperatures with highs around 13° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Mateo County during March?
Moderate rainfall is anticipated in San Mateo County during March, with a total of 85 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San Mateo County during March?
The average wind speed in San Mateo County during March is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
March rainfall patterns in San Mateo County
Explore the daily rainfall trends and prepare for San Mateo Countys March weather 💧
Typically, San Mateo County has 11 rainy days in March with a total of 85 mm of rainfall.
UV exposure in San Mateo County during March
Stay informed about UV levels for safe outdoor activities throughout the month of March ☀️
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Where is San Mateo County?Get accurate weather forecasts for San Mateo County, located at latitude 37.563 and longitude -122.326. Stay updated with localized weather information tailored for San Mateo County.
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