S
M
T
W
T
F
S
26
89°
71°
27
89°
71°
28
88°
70°
29
87°
70°
30
86°
65°
31
81°
64°
1
81°
64°
2
82°
65°
3
83°
70°
4
82°
66°
5
83°
65°
6
84°
70°
7
86°
70°
8
84°
69°
9
83°
67°
10
83°
63°
11
84°
63°
12
84°
64°
13
85°
69°
14
88°
70°
15
87°
68°
16
88°
70°
17
90°
69°
18
88°
64°
19
85°
61°
20
81°
60°
21
80°
60°
22
80°
61°
23
81°
60°
24
81°
60°
25
82°
59°
26
84°
59°
27
85°
60°
28
83°
59°
29
80°
59°
30
79°
58°
31
82°
61°
1
85°
58°
2
79°
57°
3
78°
56°
4
79°
57°
5
81°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hagerstown
Hagerstown's August 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 56° and 71°. The average high for August is 84° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Hagerstown. See also: September | October | November.
