Monthly Historical AveragesGrantham, NH
Average Temperature
High
19°
Feels 18
Low
7°
Feels 6
Average Precipitation
11 Days
64.7mm
0.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, May 23, 2026
Day
17°Feels 17
Wind
14 km/h SE
Gust
21 km/h
Humidity
39%
P.O.P
30%
Night
9°Feels 5
Wind
13 km/h SE
Gust
20 km/h
Humidity
76%
P.O.P
70%
Rain
<1 mm
Historical AveragesMay 23
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity