Monthly Historical AveragesMercersburg, PA
Average Temperature
High
4°
Feels 2
Low
-5°
Feels -9
Average Precipitation
8 Days
16.8mm
25.9cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, February 22, 2026
Day
2°Feels 2
Wind
14 km/h NE
Gust
21 km/h
Humidity
87%
P.O.P
90%
Snow
1-3 cm
Rain
5-10 mm
Night
-1°Feels -7
Wind
25 km/h NW
Gust
37 km/h
Humidity
90%
P.O.P
90%
Snow
1-3 cm
Historical AveragesFeb 22
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity