The highest day temperature in January 2025 was 46°F. The lowest night temperature was 14°F. The average values for day and night temperatures during January were 33.0°F и 27.0°F respectivly.

The average sea surface temperature in January 2025 for Jamestown was 40.1°F. The maximum and minimum values were 36.4°F and 46.2°F respectively.

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

Precipitation total in January for Jamestown is 1.3 in. This value is relatively stable throughout the year.

The average wind speed in January is 9.8 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 Jamestown in January is 4.9 hours.