The highest day temperature in January 2024 was 71°F. The lowest night temperature was 39°F. The average values for day and night temperatures during January were 58.0°F и 48.2°F respectivly.

The average sea surface temperature in January 2024 for San Jose was 53.9°F. The maximum and minimum values were 53.2°F and 55.6°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 Jose is 2.2 in. It makes january the most rainy month of the year.

The average wind speed in January is 4.8 mph. This value is relatively stable throughout the year.

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 Jose in January is 6.2 hours.