Monthly Historical AveragesGrantham, NH
Average Temperature
High
-2°
Feels -6
Low
-11°
Feels -17
Average Precipitation
7 Days
4.7mm
35.6cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, January 11, 2026
Day
4°Feels 1
Wind
16 km/h W
Gust
35 km/h
Humidity
56%
P.O.P
30%
Night
-8°Feels -16
Wind
29 km/h W
Gust
44 km/h
Humidity
74%
P.O.P
40%
Snow
<1 cm
Historical AveragesJan 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity