Monthly Historical AveragesWatertown, MA
Average Temperature
High
5°
Feels 3
Low
-2°
Feels -6
Average Precipitation
11 Days
68.9mm
14.7cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, December 31, 2025
Day
-1°Feels -6
Wind
24 km/h SW
Gust
33 km/h
Humidity
47%
P.O.P
30%
Night
-5°Feels -12
Wind
16 km/h S
Gust
24 km/h
Humidity
86%
P.O.P
70%
Snow
~1 cm
Historical AveragesDec 31
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity