The highest day temperature in January 2024 was 64°F. The lowest night temperature was 45°F. The average values for day and night temperatures during January were 56.0°F и 52.7°F respectivly.

The average sea surface temperature in January 2024 for San Francisco was 55.3°F. The maximum and minimum values were 53.8°F and 57.4°F respectively.

Most of the days in January are sunny but you can also expect cloudy and gloomy days.

Precipitation total in January for San Francisco is 2.3 in. It makes january the most rainy month of the year.

The average wind speed in January is 7.7 mph. It makes January one of the most windless months of the year for San Francisco.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Francisco in January is 6.0 hours.