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Weather in January in San Francisco, California

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< January >
 
Normal Max/ High Temperature 13°C (56°F)
 
Average Temperature 9°C (49°F)
 
Min/ Low Temperature 5°C (42°F)
Average Sea or Water Temp 10°C(50°F)
 
Normal Precipitation 111mm (4.4in)
Number of Wet Days (probability of rain on a day) 11 (35%)
Average Sunlight per day 04:58
Average Daylight per day 09:52
Sunny (Cloudy) Daylight Hours 51% (49%)
Sun altitude at solar noon on the 21st day.
32.6°


  • The average sea tempeature is 10 °C (50 °F).
  • The average temperature in San Francisco, California in January is a little cool at 9.3 °C (48.74 °F).
  • Afternoons can be mild with average high temperatures reaching 13.1 °C (55.6 °F).
  • Overnight temperatures are generally cool with an average low of 5.4 °C (41.7 °F).
  • The range/ variation of daily average temperatures in January is 7.7 °C (13.9 °F).
  • The weather in January is hardly dry with rain now and again. Circa 110.5mm (4.4in) of fluid descends during on average 11 days.
  • The heavens above San Francisco, California are slightly fair having on balance a mediocre 4:58 of intense sunshine per day.
  • The shortest day is 9:36 long and the longest day is 10:14 long with an average length of 9:52.
  • There are approximately 4:44 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 51.1% of daylight hours and cloudy 48.9% of daylight hours.

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Weather Trend Graph for January in San Francisco, California, Usa

Graph of weather in San Francisco, California in January

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