San Bernardino, CA weather in March
San Bernardino is mild in March, with some rain: highs average 71°F and nights drop to about 45°F. Rain falls on about 6 days. A great month for outdoor plans.
- Normal high
- 71°F
- Normal low
- 45°F
- Wet days
- 6
- 2.0 in total
- Muggy days
- 0
- dew point 65°F+
How March changes from start to finish
| March 1 | March 31 | |
|---|---|---|
| Normal high | 69°F | 73°F |
| Normal low | 44°F | 46°F |
| Chance of a wet day | 25% | 17% |
| Sunrise / sunset | 6:17 am / 5:45 pm | 6:37 am / 7:08 pm |
| Daylight | 11.5 h | 12.5 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical March day
- 6 am45°Fdew point 41°F
- 9 am57°Fdew point 43°F
- Noon66°Fdew point 39°F
- 3 pm68°Fdew point 40°F
- 6 pm61°Fdew point 42°F
- 9 pm53°Fdew point 43°F
NOAA hourly normals (local standard time) from March AFB (15 mi away); average wind 5 mph; clear or few clouds in 56% of daytime hours, mostly cloudy or overcast in 36%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F17 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow6 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per March, counted from daily records for each year 1991-2020.
Rain in March
Normal precipitation is 2.0 in; a dry March brings about 0.6 in and a wet one about 2.4 in (25th and 75th percentiles). About 1 day brings half an inch or more, and about 1 an inch or more. Snow is very rare.
How March varies from year to year
- Warmest March, 1991-20202004: average high 80°F
- Coolest March1991: average high 62°F
- Wettest March1995: 6.6 in
- Driest March1997: no measurable precipitation
- Highest reading96°F (March 16, 2007)
- Lowest reading31°F (March 1, 2007)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
March compared with February and April
| February | March | April | |
|---|---|---|---|
| Normal high | 67°F | 71°F | 76°F |
| Normal low | 42°F | 45°F | 48°F |
| Wet days | 8 | 6 | 4 |
| Comfortable days | 13 | 17 | 15 |
| Daylight | 11.0 h | 12.0 h | 13.1 h |
Highs change by +4°F from February and +5°F into April.
Nearby alternatives in March
- Warmer: Palm Springs, CA47 mi · high 81°F · 2 wet days
- Drier: Palm Springs, CA47 mi · high 81°F · 2 wet days
- Cooler: Big Bear Lake, CA24 mi · high 51°F · 6 wet days
How San Bernardino ranks in March
- Normal high90th warmest of 378 cities; 19th of 60 in California
- Wet days72nd driest of 378
- Comfortable days36th most of 339
What to pack for San Bernardino in March
- Layers – afternoons near 71°F but nights near 45°F
Heating and cooling
March has 234 heating degree days and 9 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is San Bernardino in March?
The normal high is 71°F and the normal low is 45°F. From 1991 to 2020 the hottest March reading was 96°F (most recently on March 16, 2007).
Does it rain a lot in San Bernardino in March?
About 6 days in March have at least 0.01 in of precipitation, and the normal total is 2.0 in. The wettest March in 1991-2020 was in 1995 (6.6 in); the driest was in 1997, with no measurable precipitation.
Is March a good time to visit San Bernardino?
March ranks 2nd of 12 months on our comfort score for San Bernardino (71 out of 100). It has about 17 comfortable days and about 1 day at 90°F or hotter. The best months are March, April and May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Redlands (USC00047306), 7.3 mi SE of the city center, 1,410 ft (359 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: March AFB (USW00023119), 15 mi S of the city center, 1,516 ft (465 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: March Air Reserve Base (722860-23119), 15 mi S of the city center, 1,536 ft (485 ft higher than the city). Hourly observations, 1991-2020.