San Bernardino, CA weather in July
San Bernardino is hot and dry in July: highs average 95°F and nights drop to about 63°F. There are about 1 day with rain. This is the peak of the warm season in San Bernardino. Midday heat is the main thing to plan around.
- Normal high
- 95°F
- Normal low
- 63°F
- Wet days
- 1
- 0.1 in total
- Muggy days
- 1
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 93°F | 96°F |
| Normal low | 60°F | 64°F |
| Chance of a wet day | 2% | 3% |
| Sunrise / sunset | 5:41 am / 8:04 pm | 5:59 am / 7:51 pm |
| Daylight | 14.4 h | 13.9 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 July day
- 6 am66°Fdew point 57°F
- 9 am80°Fdew point 55°F
- Noon90°Fdew point 53°F
- 3 pm92°Fdew point 54°F
- 6 pm84°Fdew point 54°F
- 9 pm72°Fdew point 56°F
NOAA hourly normals (local standard time) from March AFB (15 mi away); average wind 6 mph; clear or few clouds in 81% of daytime hours, mostly cloudy or overcast in 11%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more24 of 31
- Muggy daysdaily mean dew point 65°F or more1 of 31
- Wet daysat least 0.01 in of rain or melted snow1 of 31
- Notable rainat least 0.10 in1 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 0.1 in; a dry July brings about 0.0 in and a wet one about 0.09 in (25th and 75th percentiles). Days with half an inch or more are rare.
How July varies from year to year
- Warmest July, 1991-20202006: average high 102°F
- Coolest July1993: average high 88°F
- Wettest July2015: 1.7 in
- Driest July1993: no measurable precipitation
- Highest reading118°F (July 22, 2006)
- Lowest reading49°F (July 19, 2001)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 89°F | 95°F | 96°F |
| Normal low | 56°F | 63°F | 63°F |
| Wet days | 1 | 1 | 1 |
| Comfortable days | 5 | 0 | 0 |
| Daylight | 14.4 h | 14.2 h | 13.4 h |
Highs change by +6°F from June and +1°F into August.
Nearby alternatives in July
- Warmer: Palm Springs, CA47 mi · high 109°F · 1 wet day
- Cooler: Big Bear Lake, CA24 mi · high 80°F · 3 wet days
How San Bernardino ranks in July
- Normal high47th warmest of 378 cities; 9th of 60 in California
- Wet days53rd driest of 378
- Comfortable days212th most of 340
What to pack for San Bernardino in July
- Light, breathable clothing – highs near 95°F
- Layers – afternoons near 95°F but nights near 63°F
- Sunglasses and sunscreen – about 14.2 hours of daylight and highs near 95°F
Heating and cooling
July has 0 heating degree days and 432 cooling degree days (base 65°F), 13% of the year's total heating and cooling demand.
Questions
How hot is San Bernardino in July?
The normal high is 95°F and the normal low is 63°F. From 1991 to 2020 the hottest July reading was 118°F (July 22, 2006).
Does it rain a lot in San Bernardino in July?
About 1 days in July have at least 0.01 in of precipitation, and the normal total is 0.1 in. The wettest July in 1991-2020 was in 2015 (1.7 in); the driest was in 1993, with no measurable precipitation.
Is July a good time to visit San Bernardino?
July ranks 11th of 12 months on our comfort score for San Bernardino (42 out of 100). It has almost no comfortable days and about 24 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.