San Francisco Weather in July
Despite it being summer, the temperature remains remarkably mild at San Francisco, California during July. The city usually has no rain for the month, although this is the windiest time of year.
This page gives detailed information on the typical July temperature, precipitation, sun, humidity, wind and storms for San Francisco.
The temperature, rainfall, sunshine and wind speed numbers here are historical averages based on climate data gathered in downtown San Francisco near the corner of Buchanan and Hermann Streets. The rest of the measurements are averages at the San Francisco International Airport, located south of the city center.
|67 °F||July average high||19 °C|
|54 °F||July average low||12 °C|
In most years, San Francisco averages a daily maximum temperature for July that's between 65 and 68 degrees Fahrenheit (18 to 20 degrees Celsius). The minimum temperature usually falls between 53 and 55 °F (12 to 13 °C).
The days at San Francisco maintain steady temperatures during July, with no substantial warming or cooling over the month.
|7 days||70 °F max. or more (21 °C)|
|1 day||50 °F min. or less (10 °C)|
Usually every day during July the temperature rises to over 50 °F (10 °C) in San Francisco. The city averages 1 day this month when the thermometer reaches into the 80s °F (over 27 °C). Temperatures above 90 °F (32 °C) are not expected here during July.
The thermometer normally dips to 60 °F (16 °C) or below every night this month. But July doesn't get as cold as 40 °F (4 °C).
|0 in||total precipitation||0 mm|
|0 days||of rain|
San Francisco usually receives no rain in July.
|21 days||clear skies|
The sun's rays reach the ground in San Francisco during 66 percent of daylight hours on average in July, for a total of 296 hours in the month. Typically on 21 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in July at San Francisco lasts for 14 hours and 27 minutes a day on average. The longest day of the month is the 1st with 14 hours and 44 minutes of daylight. By the end of the month, the days have shortened to 14:06 from sunrise to sunset. These durations can vary by a minute or two from year to year.
|73 %||July average humidity|
The relative humidity in San Francisco during July usually peaks at 86 percent in the morning then drops to 56 percent by early afternoon.
|Local Time||1 am||4 am||7 am||10 am||1 pm||4 pm||7 pm||10 pm|
|11.2 mph||July wind speed average||18.0 kph|
July is the windiest month in San Francisco.
|0 days||rainfall of 0.5 inches (13 mm) or more|
|0 days||with thunderstorms in July|
Heavy rainstorms normally don't occur in San Francisco during July. The city has a July thunderstorm just once a decade on average.
These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals.