S
M
T
W
T
F
S
26
82°
63°
27
83°
60°
28
83°
59°
29
84°
61°
30
85°
65°
31
84°
60°
1
83°
65°
2
87°
65°
3
88°
60°
4
83°
59°
5
82°
58°
6
83°
59°
7
83°
61°
8
81°
59°
9
82°
62°
10
86°
61°
11
82°
61°
12
84°
64°
13
87°
64°
14
83°
65°
15
85°
64°
16
88°
58°
17
82°
57°
18
81°
58°
19
81°
61°
20
82°
57°
21
81°
57°
22
81°
60°
23
84°
61°
24
88°
62°
25
89°
61°
26
88°
56°
27
85°
55°
28
79°
54°
29
79°
55°
30
80°
56°
31
83°
61°
1
85°
61°
2
86°
60°
3
85°
57°
4
84°
61°
5
84°
59°
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 89°, with overnight lows between 54° and 65°. The average high for August is 84° 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 August weather will actually feel in Gettysburg. See also: September | October | November.