S
M
T
W
T
F
S
31
82°
55°
1
80°
59°
2
77°
60°
3
73°
60°
4
77°
59°
5
74°
56°
6
77°
59°
7
82°
61°
8
82°
62°
9
81°
60°
10
77°
54°
11
74°
54°
12
74°
55°
13
75°
54°
14
76°
60°
15
83°
62°
16
84°
63°
17
83°
64°
18
82°
58°
19
77°
56°
20
77°
56°
21
78°
61°
22
82°
64°
23
85°
65°
24
85°
65°
25
84°
64°
26
83°
64°
27
81°
63°
28
84°
65°
29
87°
66°
30
88°
64°
1
87°
61°
2
82°
60°
3
81°
59°
4
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mercersburg
Mercersburg's June 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 54° and 66°. The average high for June is 80° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Mercersburg. See also: July | August | September.
