San Francisco weather by month › December
San Francisco in December: weather and what to expect
Wet. December falls in San Francisco’s rainy season, with about 6.5 in (164 mm) of rain. For drier weather, go in September to October.
December weather in San Francisco
Daytime high59°F 15°C
Night low45°F 7°C
Rain6.5 in 164 mm
AirDry
SunWeak sun
In December, San Francisco averages highs of 59°F (15°C) and lows of 45°F (7°C), with 6.5 in (164 mm) of rain. The air feels dry and the sun is weak. 1991–2020 averages, not a forecast.
Pack: a sweater for evenings, a rain jacket or umbrella.
Places with the same weather in December
Match out of 100 for December, one city per country.
Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec