Normally the weather in San Bernardino in the time of March is 24. Through the month the highs are about 31 with lows about 21 degrees. We have put some more details below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 24 |
| High Temperature | 31 |
| Low Temperature | 21 |
Useful Links: San Bernardino Weather: Average Weather & Yearly Climate