| < December >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Sea or Water Temp
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average sea tempeature is 11 °C (51.8 °F).
- The average temperature in San Francisco, California in December is a little cool at 9.7 °C (49.46 °F).
- Afternoons can be mild with average high temperatures reaching 13.4 °C (56.1 °F).
- Overnight temperatures are generally cool with an average low of 5.9 °C (42.6 °F).
- In December the mean daily temperature range/ variation is 7.5 °C (13.5 °F).
- The weather in December is somewhat dry with rain at times. Just 78.5mm (3.1in) of H2O precipitates during on average 10 days.
- In December the skies in San Francisco, California are fair with on balance a moderate 5:46 of glaring sunshine daily.
- The shortest day is 9:33 long and the longest day is 9:44 long with an average length of 9:36.
- There are approximately 3:40 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 61.1% of daylight hours and cloudy 38.9% of daylight hours.
Check the distance to and compare the San Francisco, California December averages with somewhere beginning with:
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Weather Trend Graph for December in San Francisco, California, Usa
Navigate to December Weather in Locations Surrounding San Francisco, California:
- Redding, Ca, Usa - 320.7 kms (199.3 miles) N
- Red Bluff, California, Usa - 281.9 kms (175.2 miles) N
- Chico Univ Farm, Ca, Usa - 267.1 kms (166 miles) N
- Reno, Nevada, Usa - 308.1 kms (191.5 miles) NE
- Sacramento, California, Usa - 126.5 kms (78.6 miles) NE
- Vacaville, Ca, Usa - 89.3 kms (55.5 miles) NNE
- Berkeley, Ca, Usa - 54.3 kms (33.8 miles) NE
- Stockton, Ca, Usa - 104.5 kms (64.9 miles) ENE
- Bishop, Ca, Usa - 355.4 kms (220.9 miles) E
- Fresno, California, Usa - 254.4 kms (158.1 miles) ESE
- Bakersfield, Ca, Usa - 384.2 kms (238.8 miles) SE
- San Luis Obispo Poly, Ca, Usa - 316.3 kms (196.5 miles) SSE
- Santa Maria, Ca, Usa - 348.3 kms (216.4 miles) SSE