San Francisco, CA weather in July
July in San Francisco: mild and dry. Highs 66°F, lows 54°F, about 1 wet day. A great month for outdoor plans.
- Normal high
- 66°F
- Normal low
- 54°F
- Wet days
- 1
- 0.01 in total
- Muggy days
- 0
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 67°F | 66°F |
| Normal low | 54°F | 55°F |
| Chance of a wet day | 3% | 3% |
| Sunrise / sunset | 5:51 am / 8:35 pm | 6:12 am / 8:19 pm |
| Daylight | 14.7 h | 14.1 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 am57°Fdew point 53°F
- 9 am63°Fdew point 54°F
- Noon69°Fdew point 54°F
- 3 pm69°Fdew point 54°F
- 6 pm64°Fdew point 53°F
- 9 pm59°Fdew point 53°F
NOAA hourly normals (local standard time) from San Francisco Intl Airport (11 mi away); average wind 13 mph; clear or few clouds in 65% of daytime hours, mostly cloudy or overcast in 17%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F20 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow1 of 31
- Notable rainat least 0.10 in0 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 0.01 in; a dry July brings about 0.0 in and a wet one about 0.02 in (25th and 75th percentiles). Days with half an inch or more are rare.
How July varies from year to year
- Warmest July, 1991-20201996: average high 73°F
- Coolest July2010: average high 63°F
- Wettest July2015: 0.09 in
- Driest July1991: no measurable precipitation
- Highest reading92°F (July 1, 1991)
- Lowest reading48°F (July 4, 1999)
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 | 67°F | 66°F | 68°F |
| Normal low | 53°F | 54°F | 56°F |
| Wet days | 2 | 1 | 1 |
| Comfortable days | 16 | 20 | 21 |
| Daylight | 14.7 h | 14.5 h | 13.6 h |
Highs change by -1°F from June and +2°F into August.
Nearby alternatives in July
- Warmer: San Mateo, CA16 mi · high 73°F · 0 wet days
How San Francisco ranks in July
- Normal high372nd warmest of 378 cities; 60th of 60 in California
- Wet days48th driest of 378
- Comfortable days18th most of 340
Heating and cooling
July has 152 heating degree days and 7 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How cold is San Francisco in July?
The normal high is 66°F and the normal low is 54°F. From 1991 to 2020 the coldest July reading was 48°F (July 4, 1999).
Does it rain a lot in San Francisco in July?
About 1 days in July have at least 0.01 in of precipitation, and the normal total is 0.01 in. The wettest July in 1991-2020 was in 2015 (0.09 in); the driest was in 1991, with no measurable precipitation.
Is July a good time to visit San Francisco?
July ranks 1st of 12 months on our comfort score for San Francisco (84 out of 100). It has about 20 comfortable days. The best months are July and August.
Where the numbers come from
- Temperature, rain and frost dates: San Francisco Downtown (USW00023272), 0.5 mi SW of the city center, 150 ft (95 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: San Francisco Oceanside (USC00047767), 5.7 mi SW of the city center, 8 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: San Francisco Intl Airport (USW00023234), 11 mi SSE of the city center, 8 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: San Francisco International Airport (724940-23234), 11 mi SSE of the city center, 10 ft . Hourly observations, 1991-2020.