The highest day temperature in January 2026 was 52°F. The lowest night temperature was 4°F. The average values for day and night temperatures during January were 33.7°F и 27.2°F respectivly.

The average sea surface temperature in January 2026 for Falmouth was 34.5°F. The maximum and minimum values were 30.0°F and 36.8°F respectively.

You can expect various weather conditions during January. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in January for Falmouth is 1.3 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 13.9 mph. It makes January one of the most windy months of the year for Falmouth.

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 Falmouth in January is 4.9 hours.