San Mateo (CA)
March
Weather in San Mateo, California for March 2026
Your guide to San Mateo weather in March - trends and predictions
Heat Advisory - See hour by hour.
So far, March 2026 in San Mateo 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 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 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
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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 Weather March
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Temperatures trend during March in San Mateo
See the weather trend as well as the moving average line
March weather in San Mateo 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 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 forecast closer to your planned date for the most up-to-date weather information.
Change Month
San Mateo in March - FAQ
What are the expected maximum and minimum temperatures in San Mateo 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 during March?
Moderate rainfall is anticipated in San Mateo 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 during March?
The average wind speed in San Mateo during March is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
March rainfall patterns in San Mateo
Explore the daily rainfall trends and prepare for San Mateos March weather 💧
Typically, San Mateo has 11 rainy days in March with a total of 85 mm of rainfall.
UV exposure in San Mateo during March
Stay informed about UV levels for safe outdoor activities throughout the month of March ☀️
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