San Bernardino, CA weather in April
Expect mild, mostly dry weather in San Bernardino in April, with highs near 76°F and lows near 48°F. Rain falls on about 4 days. Great for outdoor plans.
- Normal high
- 76°F
- Normal low
- 48°F
- Wet days
- 4
- 0.9 in total
- Muggy days
- 0
- dew point 65°F+
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 74°F | 78°F |
| Normal low | 46°F | 50°F |
| Chance of a wet day | 15% | 12% |
| Sunrise / sunset | 6:36 am / 7:09 pm | 6:00 am / 7:32 pm |
| Daylight | 12.6 h | 13.5 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 April day
- 6 am49°Fdew point 44°F
- 9 am63°Fdew point 43°F
- Noon71°Fdew point 40°F
- 3 pm73°Fdew point 41°F
- 6 pm65°Fdew point 43°F
- 9 pm56°Fdew point 45°F
NOAA hourly normals (local standard time) from March AFB (15 mi away); average wind 6 mph; clear or few clouds in 62% of daytime hours, mostly cloudy or overcast in 30%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F15 of 30
- Hot dayshigh 90°F or more3 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow4 of 30
- Notable rainat least 0.10 in2 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per April, counted from daily records for each year 1991-2020.
Rain in April
Normal precipitation is 0.9 in; a dry April brings about 0.08 in and a wet one about 1.2 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How April varies from year to year
- Warmest April, 1991-20201996: average high 82°F
- Coolest April1999: average high 68°F
- Wettest April2020: 4.4 in
- Driest April1993: no measurable precipitation
- Highest reading101°F (April 20, 2009)
- Lowest reading33°F (April 9, 2011)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
April compared with March and May
| March | April | May | |
|---|---|---|---|
| Normal high | 71°F | 76°F | 80°F |
| Normal low | 45°F | 48°F | 52°F |
| Wet days | 6 | 4 | 3 |
| Comfortable days | 17 | 15 | 14 |
| Daylight | 12.0 h | 13.1 h | 13.9 h |
Highs change by +5°F from March and +4°F into May.
Nearby alternatives in April
- Warmer: Palm Springs, CA47 mi · high 87°F · 1 wet day
- Drier: Palm Springs, CA47 mi · high 87°F · 1 wet day
- Cooler: Big Bear Lake, CA24 mi · high 57°F · 4 wet days
How San Bernardino ranks in April
- Normal high104th warmest of 378 cities; 13th of 60 in California
- Wet days54th driest of 378
- Comfortable days76th most of 340
What to pack for San Bernardino in April
- Layers – afternoons near 76°F but nights near 48°F
Heating and cooling
April has 137 heating degree days and 36 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is San Bernardino in April?
The normal high is 76°F and the normal low is 48°F. From 1991 to 2020 the hottest April reading was 101°F (April 20, 2009).
Does it rain a lot in San Bernardino in April?
About 4 days in April have at least 0.01 in of precipitation, and the normal total is 0.9 in. The wettest April in 1991-2020 was in 2020 (4.4 in); the driest was in 1993, with no measurable precipitation.
Is April a good time to visit San Bernardino?
April ranks 1st of 12 months on our comfort score for San Bernardino (72 out of 100). It has about 15 comfortable days and about 3 days 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.