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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

Current Conditions

(Updated: 8:53 AM PDT MON OCT 13 2008)

Fair Fair, 65°F Humidity: 20% Dewpoint: 23°F
Wind Speed: CALM Heat Index: 65°F
Barometer: 30.30 in. Wind Chill: 65°F

Weather Forecast

(Generated: 4:00 AM PDT MON OCT 13 2008)
Hi: 65°F Today: Sunny. Highs in the 60s and 70s. North winds 5 to 15 mph... Becoming west late.
Lo: 46°F
Hi: 65°F Tuesday: Sunny. Highs in the 60s and 70s. Northeast winds around 5 mph...Becoming west 5 to 15 mph in the afternoon.
Lo: 50°F
Hi: 66°F Wednesday: Areas of morning low clouds and fog near the ocean. Otherwise sunny. Highs in the 60s to mid 70s. Northwest winds 5 to 15 mph.
Lo: 50°F
Hi: 70°F Thursday: Sunny except areas of morning low clouds and fog. Highs in the upper 50s to mid 70s.
Lo: 50°F
Hi: 70°F Friday: Areas of night and morning low clouds and fog. Otherwise mostly clear. Lows in the upper 40s to mid 50s. Highs in the upper 50s to mid 70s.
Lo: 50°F
Hi: 70°F Saturday: Areas of night and morning low clouds and fog. Otherwise mostly clear. Lows in the upper 40s to mid 50s. Highs in the upper 50s to mid 70s.
Lo: 50°F
Hi: 70°F Saturday: Areas of night and morning low clouds and fog. Otherwise mostly clear. Lows in the upper 40s to mid 50s. Highs in the upper 50s to mid 70s.
Lo: 50°F

Moon, Sunrise and Sunset

Full Moon Moon Phase: Full Moon Civil Twilight:
6:49 AM PDT
Sunrise:
7:15 AM PDT
Sunset:
6:35 PM PDT
Civil Twilight:
7:01 PM PDT

Normal Climate

Normal Temperatures

(SAN FRANCISCO DOWNTOWN Weather station, 0.72 miles from San Francisco)
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

(SAN FRANCISCO DOWNTOWN Weather station, 0.72 miles from San Francisco)
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