The temperatures in San Bernardino in March are quite cold with temperatures between 5°C and 20°C, warm clothes are a must.
The wather in San Bernardino in March can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in San Bernardino in March 2025.
If you’re planning to visit San Bernardino in the near future, we highly recommend that you review the 14 day weather forecast for San Bernardino before you arrive.
Temperatures
20° / 5°
Rainy Days
2
Snowy Days
0
Dry Days
29
Rainfall
31
mm
Sun Hours
11.4
Hrs