San Francisco, CA Weather
San Francisco, CA climate is mild during summer when temperatures tend to be in the 60's and cool during winter when temperatures tend to be in the 50's.
The warmest month of the year is September with an average maximum temperature of 71.30 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 46.40 degrees Fahrenheit.
Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 14 degrees Fahrenheit, and fairly limited during winter with an average difference of 12 degrees Fahrenheit.
The annual average precipitation at San Francisco is 22.28 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 4.72 Inches.
Weather Data
Weather Warnings
| High surf advisory in effect until 4 pm pst Sunday . |
Current Conditions
|
Fair, 56°F | Humidity: 72% | Dewpoint: 47°F |
| Wind Speed: NW 8.1 MPH (7 KT) | Heat Index: 56°F | ||
| Barometer: 30.09 in. | Wind Chill: 54°F |
Weather Forecast
 | Tonight: Mostly clear. Lows in the mid 40s to lower 50s. North winds 10 to 20 mph. | |
| Lo: 46°F | ||
 | Hi: 65°F | Sunday: Mostly sunny. Highs in the 60s. Northwest winds 10 to 20 mph. |
| Lo: 46°F | ||
 | Hi: 69°F | Monday: Partly cloudy. Highs in the 50s to upper 60s. North winds 5 to 10 mph...Becoming west in the afternoon. |
| Lo: 46°F | ||
 | Hi: 65°F | Tuesday: Partly cloudy. A slight chance of showers. Highs in the 60s. |
| Lo: 46°F | ||
| Hi: 60°F | Veterans day: Mostly cloudy in the morning then becoming partly cloudy. A slight chance of showers. Highs in the upper 50s to mid 60s. |
| Lo: 46°F | ||
| Hi: 69°F | Thursday: Partly cloudy. Lows in the 40s to lower 50s. Highs in the 50s to upper 60s. |
| Lo: 46°F | ||
| Hi: 69°F | Friday: Partly cloudy. Lows in the 40s to lower 50s. Highs in the 50s to upper 60s. |
| Lo: 46°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waning Gibbous Moon | Civil Twilight: 6:13 AM PST |
Sunrise: 6:40 AM PST |
| Sunset: 5:05 PM PST |
Civil Twilight: 5:32 PM PST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 58.1 | 61.4 | 62.5 | 64.5 | 65.4 | 67.7 | 68.2 | 69.2 | 71.3 | 70.4 | 64.1 | 58.6 | 65.1 |
| Mean °F | 52.3 | 55.0 | 55.9 | 57.3 | 58.4 | 60.5 | 61.3 | 62.4 | 63.7 | 62.5 | 57.5 | 52.7 | 58.3 |
| Min °F | 46.4 | 48.5 | 49.2 | 50.1 | 51.4 | 53.2 | 54.4 | 55.6 | 56.1 | 54.6 | 50.8 | 46.7 | 51.4 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 4.72 | 4.15 | 3.40 | 1.25 | 0.54 | 0.13 | 0.04 | 0.09 | 0.28 | 1.19 | 3.31 | 3.18 | 22.28 |
