San Bernardino County (San Bernardino)
April
Weather in San Bernardino County, California for April 2026
Your guide to San Bernardino County weather in April - trends and predictions
The forecast for the first days of April 2026 in San Bernardino County predicts the temperature to be 26.7 °F, significantly warmer than the historical average.
In general, the average temperature in San Bernardino County at the beginning of April is 19.7 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 19.4 °F by the end of April.
San Bernardino County experiences moderate rainfall in April, with an average of 6 rainy days and a total precipitation of 56.9 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
21°/9°
Temperatures
17 km/h
Avg max wind
54 %
Avg humidity
San Bernardino County Weather April
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Temperatures trend during April in San Bernardino County
See the weather trend as well as the moving average line
April weather in San Bernardino County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Apr. 1 |  Sunny | 18° /8° | 0 mm | 4 | |
| Apr. 2 |  Overcast | 22° /5° | 0 mm | 3 | |
| Apr. 3 |  Partly cloudy | 24° /10° | 0 mm | 5 | |
| Apr. 4 |  Patchy rain possible | 17° /5° | 0.2 mm | 5 | |
| Apr. 5 | Light rain shower | 17° /4° | 4.8 mm | 5 | |
| Apr. 6 | Sunny | 20° /6° | 0 mm | 6 | |
| Apr. 7 | Partly cloudy | 20° /8° | 0 mm | 6 | |
| Apr. 8 | Sunny | 22° /7° | 0 mm | 6 | |
| Apr. 9 | Sunny | 27° /11° | 0 mm | 7 | |
| Apr. 10 | Sunny | 28° /13° | 0 mm | 7 | |
| Apr. 11 | Sunny | 29° /15° | 0 mm | 7 | |
| Apr. 12 | Sunny | 24° /12° | 0 mm | 6 | |
| Apr. 13 | Light rain shower | 20° /9° | 1.7 mm | 5 | |
| Apr. 14 | Light rain shower | 20° /8° | 3.2 mm | 5 | |
| Apr. 15 | Patchy rain possible | 20° /7° | 0.3 mm | 5 | |
| Apr. 16 | Sunny | 21° /8° | 0 mm | 6 | |
| Apr. 17 | Partly cloudy | 18° /9° | 43.8 mm | 5 | |
| Apr. 18 | Overcast | 20° /11° | 1.6 mm | 5 | |
| Apr. 19 | Sunny | 24° /8° | 0 mm | 6 | |
| Apr. 20 | Sunny | 25° /10° | 0 mm | 7 | |
| Apr. 21 | Sunny | 26° /13° | 0 mm | 6 | |
| Apr. 22 | Sunny | 24° /12° | 0 mm | 7 | |
| Apr. 23 | Patchy rain possible | 21° /11° | 0 mm | 5 | |
| Apr. 24 | Partly cloudy | 20° /7° | 0 mm | 6 | |
| Apr. 25 | Patchy rain possible | 14° /7° | 1 mm | 4 | |
| Apr. 26 | Patchy rain possible | 13° /6° | 0.4 mm | 3 | |
| Apr. 27 | Sunny | 18° /6° | 0 mm | 5 | |
| Apr. 28 | Sunny | 22° /8° | 0 mm | 5 | |
| Apr. 29 | Sunny | 25° /10° | 0 mm | 7 | |
| Apr. 30 | Sunny | 24° /12° | 0 mm | 6 | |
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Important Notice
Our weather forecast for San Bernardino County 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 Bernardino County forecast closer to your planned date for the most up-to-date weather information.
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San Bernardino County in April - FAQ
What are the expected maximum and minimum temperatures in San Bernardino County during April?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Bernardino County during April?
Moderate rainfall is anticipated in San Bernardino County during April, with a total of 56.9 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San Bernardino County during April?
The average wind speed in San Bernardino County during April is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
April rainfall patterns in San Bernardino County
Explore the daily rainfall trends and prepare for San Bernardino Countys April weather 💧
Typically, San Bernardino County has 6 rainy days in April with a total of 56.9 mm of rainfall.
UV exposure in San Bernardino County during April
Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️
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Where is San Bernardino County?Get accurate weather forecasts for San Bernardino County, located at latitude 34.108 and longitude -117.29. Stay updated with localized weather information tailored for San Bernardino County.
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