Measurements:
°C
°F
Boston
8°F
SE 11 mph
Feels like: -4°F
Precip: 0%
World Resorts USA Boston Weather January Weather in Boston

Boston Weather: January

Average Day Temperature: 31.5°F
Average Night Temperature: 25.1°F
Sea Water Temperature: 39.8°F
Number of Sunny Days: 12 days
Sunshine Hours: 9.1 - 10.0 hours
Number of Rainy Days: 2 days
Precipitation Totals: 2.6 in
Number of Snowy Days: 1 day

Air Temperature in January, °F

Select Year: 2025 2024 2023

The highest day temperature in January 2025 was 44°F. The lowest night temperature was 7°F. The average values for day and night temperatures during January were 29.8°F и 20.7°F respectivly.

Boston Water Sea Temperature in January, °F

Select Year: 2025 2024 2023

The average sea surface temperature in January 2025 for Boston was 36.9°F. The maximum and minimum values were 33.6°F and 39.4°F respectively.

Sunny, Cloudy and Gloomy days

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

Precipitation Totals in January, in

Precipitation total in January for Boston is 2.6 in.

Wind Speed in January, mph

The average wind speed in January is 10.8 mph. It makes January the most windy month of the year for Boston.

Average Sunny Hours Per Day

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 Boston in January is 5.1 hours.

Best Time to Visit Boston
The most sunny months:
August 16 days
July 15 days
November 14 days
The most warm months:
July 85.5 °F
August 83.7 °F
June 76.9 °F
Warmest sea temperature:
August 69.5 °F
July 68.6 °F
September 65.9 °F
The most cold months:
January 31.5 °F
February 33.1 °F
December 38.2 °F
The most rainy months:
April 5 days
May 4 days
October 4 days
The most windy months:
January 11 mph
March 11 mph
February 10 mph

Boston on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +20
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Boston
Local time: 04:14
05 dec, friday
0600 6°F
SE
7 mph
0900 10°F
E
4 mph
1200 20°F
NE
6 mph
1500 24°F
NE
8 mph
1800 22°F
NE
6 mph
2100 20°F
NE
6 mph
06 dec, saturday
0000 20°F
NE
5 mph
0300 20°F
NE
3 mph