The highest day temperature in January 2026 was 46°F. The lowest night temperature was 10°F. The average values for day and night temperatures during January were 31.1°F и 28.5°F respectivly.

The average sea surface temperature in January 2026 for Provincetown was 39.3°F. The maximum and minimum values were 36.2°F and 40.8°F respectively.

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

Precipitation total in January for Provincetown is 1.2 in. It makes january the most rainy month of the year.

The average wind speed in January is 15.3 mph. It makes January one of the most windy months of the year for Provincetown.

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 Provincetown in January is 4.5 hours.