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Weather in December in San Francisco, California

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< December >
 
Normal Max/ High Temperature 13°C (56°F)
 
Average Temperature 10°C (49°F)
 
Min/ Low Temperature 6°C (43°F)
Average Sea or Water Temp 11°C(52°F)
 
Normal Precipitation 79mm (3.1in)
Number of Wet Days (probability of rain on a day) 10 (32%)
Average Sunlight per day 05:46
Average Daylight per day 09:36
Sunny (Cloudy) Daylight Hours 61% (39%)
Sun altitude at solar noon on the 21st day.
29°


  • 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 average diurnal temperature variation/ range is 7.5 °C (13.5 °F).
  • The weather in December is somewhat dry with rain at times. Just 78.5mm (3.1in) of liquid is released during an average of 10 days.
  • The heavens above San Francisco, California are fair with on average a moderate 5:46 of magnificent 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

Graph of weather in San Francisco, California in December

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