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7 Days
14 Days
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Monthly
°C
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°Fahrenheit
Monthly Historical Averages
Mercersburg, PA
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Daily Historical Averages
April 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
16°
10
25°
11
19°
12
22°
13
25°
14
29°
15
31°
16
31°
17
27°
18
23°
19
18°
20
20°
21
18°
22
23°
23
25°
24
25
26
27
28
29
30
Forecast
Thursday, April 9, 2026
Day
16°
Feels 15
Wind
19 km/h S
Gust
29 km/h
Humidity
34%
P.O.P
20%
Night
4°
Feels 3
Wind
17 km/h S
Gust
25 km/h
Humidity
89%
P.O.P
10%
Historical Averages
Apr 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
April
Average Temperature
High
18°
Feels 17
Low
6°
Feels 4
Average Precipitation
10 Days
Rain amount
70.7mm
Snow amount
0.1cm