S
M
T
W
T
F
S
26
82°
63°
27
85°
64°
28
80°
65°
29
75°
65°
30
77°
65°
31
82°
64°
1
82°
63°
2
75°
71°
3
82°
66°
4
83°
61°
5
81°
69°
6
89°
69°
7
88°
71°
8
85°
66°
9
88°
68°
10
86°
65°
11
82°
67°
12
87°
69°
13
87°
70°
14
85°
65°
15
88°
67°
16
86°
72°
17
87°
63°
18
85°
64°
19
87°
63°
20
89°
62°
21
89°
64°
22
92°
66°
23
89°
63°
24
85°
61°
25
83°
59°
26
86°
61°
27
87°
64°
28
79°
56°
29
80°
57°
30
85°
62°
31
86°
62°
1
86°
61°
2
85°
63°
3
87°
63°
4
86°
62°
5
85°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gettysburg
Gettysburg's August 2026 forecast shows daily high temperatures ranging from 79° to 92°, with overnight lows between 56° and 72°. The average high for August is 86° with an average low of 63°. 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 Gettysburg. See also: September | October | November.