San Mateo (CA)
April
Weather in San Mateo, California for April 2026
Your guide to San Mateo weather in April - trends and predictions
In general, the average temperature in San Mateo at the beginning of April is 14.3 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 13.9 °F by the end of April.
With an average of 5 rainy days, San Mateo experiences minimal rainfall in April.
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Temperatures
Rain 🌧️
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25
Dry days
5
Rainy days
0
Snow days
15°/9°
Temperatures
17 km/h
Avg max wind
84 %
Avg humidity
San Mateo Weather April
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Temperatures trend during April in San Mateo
See the weather trend as well as the moving average line
April weather in San Mateo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Apr. 1 |  Moderate or heavy rain shower | 12° /9° | 9.7 mm | 3 | |
| Apr. 2 |  Cloudy | 11° /7° | 0 mm | 3 | |
| Apr. 3 |  Partly cloudy | 14° /8° | 0 mm | 4 | |
| Apr. 4 |  Overcast | 15° /8° | 0 mm | 4 | |
| Apr. 5 | Overcast | 16° /8° | 0 mm | 4 | |
| Apr. 6 | Overcast | 16° /7° | 0 mm | 4 | |
| Apr. 7 |  Patchy rain possible | 16° /10° | 0.3 mm | 4 | |
| Apr. 8 | Overcast | 15° /10° | 0 mm | 4 | |
| Apr. 9 | Overcast | 18° /9° | 0 mm | 4 | |
| Apr. 10 | Overcast | 16° /9° | 0 mm | 4 | |
| Apr. 11 | Overcast | 14° /9° | 0 mm | 3 | |
| Apr. 12 | Overcast | 15° /8° | 0 mm | 3 | |
| Apr. 13 | Overcast | 18° /9° | 0 mm | 4 | |
| Apr. 14 | Cloudy | 19° /10° | 0 mm | 4 | |
| Apr. 15 | Overcast | 16° /9° | 0 mm | 4 | |
| Apr. 16 | Overcast | 14° /10° | 0 mm | 3 | |
| Apr. 17 | Patchy rain possible | 14° /10° | 0.5 mm | 3 | |
| Apr. 18 | Overcast | 16° /8° | 0 mm | 4 | |
| Apr. 19 | Overcast | 16° /9° | 0 mm | 4 | |
| Apr. 20 | Overcast | 16° /9° | 0 mm | 4 | |
| Apr. 21 | Overcast | 20° /9° | 0 mm | 5 | |
| Apr. 22 | Overcast | 15° /9° | 0 mm | 4 | |
| Apr. 23 | Overcast | 12° /9° | 0 mm | 3 | |
| Apr. 24 | Patchy rain possible | 12° /9° | 0.1 mm | 3 | |
| Apr. 25 | Patchy rain possible | 12° /9° | 0.4 mm | 3 | |
| Apr. 26 | Patchy rain possible | 13° /9° | 2.2 mm | 3 | |
| Apr. 27 | Patchy rain possible | 12° /9° | 0.2 mm | 3 | |
| Apr. 28 | Overcast | 15° /9° | 0 mm | 4 | |
| Apr. 29 | Overcast | 16° /9° | 0 mm | 4 | |
| Apr. 30 |  Mist | 17° /10° | 0 mm | 4 | |
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Important Notice
Our weather forecast for San Mateo in April 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 April - FAQ
What are the expected maximum and minimum temperatures in San Mateo during April?
During April, expect a variety of temperatures with highs around 15° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Mateo during April?
Expect minimal rainfall in San Mateo during April, with a total of 13.4 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in San Mateo during April?
The average wind speed in San Mateo during April is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
April rainfall patterns in San Mateo
Explore the daily rainfall trends and prepare for San Mateos April weather 💧
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