San Francisco Weather in June
The mild spring weather continues through June at San Francisco, California. This is one of the city's sunniest months, yet the temperature is rarely hot.
This page gives detailed information on the typical June 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 other measurements are averages at San Francisco International Airport, located south of the city center.
Temperature
| 67 °F | June average high | 19 °C |
| 53 °F | June average low | 12 °C |
| 28 days | 60 °F max. or more (16 °C) |
| 4 days | 50 °F min. or less (10 °C) |
Usually every day during June the temperature rises to over 50 degrees Fahrenheit (10 degrees Celsius) in San Francisco. The city averages 8 days this month when the thermometer reaches into the 70s °F (over 21 °C). Temperatures above 90 °F (32 °C) rarely happen during June.
The thermometer normally dips to 60 °F (16 °C) or below every night this month. But June does not get as cold as 40 °F (4 °C).
Rain
| 0.2 in | total precipitation | 5 mm |
| 2 days | of rain |
Every few years, San Francisco receives no rain in June. About one in four years, June receives 0.2 inches (4 mm) or more of rain.
Sun
| 73 % | sunshine |
| 16 days | clear skies |
The sun's rays reach the ground in San Francisco during 73 percent of daylight hours on average in June, for a total of 323 hours in the month. Typically on 16 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in June at San Francisco averages 14 hours and 44 minutes a day. The longest days of the year, from around June 18th to 23rd, last 14 hours and 47 minutes from sunrise to sunset.
Humidity
| 71 % | June average humidity |
The relative humidity in San Francisco during June usually peaks at 84 percent in the morning then drops to 55 percent by early afternoon.
| Local Time | 1 am | 4 am | 7 am | 10 am | 1 pm | 4 pm | 7 pm | 10 pm |
| Humidity % | 83 | 84 | 77 | 63 | 55 | 59 | 71 | 79 |
Wind
| 10.9 mph | June wind speed average | 17.5 kph |
June is windier than most other months in San Francisco.
Storms
| 0 days | rainfall of 0.5 inches (13 mm) or more |
| 0 days | with thunderstorms in June |
About once a decade, San Francisco receives as much as an inch (25 mm) of rain in one day during June.
Thunderstorms normally don't occur in San Francisco during June.
Reference
The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.