Monthly Historical AveragesMerrimack, NH
Average Temperature
High
7°
Feels 5
Low
-3°
Feels -6
Average Precipitation
10 Days
60.5mm
15.3cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastMonday, March 23, 2026
Day
4°Feels 1
Wind
17 km/h N
Gust
26 km/h
Humidity
65%
P.O.P
40%
Snow
<1 cm
Rain
<1 mm
Night
-2°Feels -7
Wind
15 km/h NW
Gust
23 km/h
Humidity
86%
P.O.P
70%
Snow
1-3 cm
Historical AveragesMar 23
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity