S
M
T
W
T
F
S
26
83°
63°
27
86°
64°
28
82°
64°
29
81°
61°
30
85°
55°
31
85°
60°
1
79°
67°
2
75°
63°
3
81°
59°
4
83°
53°
5
83°
58°
6
84°
64°
7
83°
67°
8
87°
66°
9
87°
63°
10
89°
70°
11
75°
64°
12
69°
63°
13
83°
62°
14
80°
68°
15
85°
72°
16
85°
69°
17
79°
62°
18
80°
61°
19
81°
61°
20
76°
58°
21
77°
57°
22
76°
58°
23
80°
59°
24
79°
59°
25
80°
57°
26
79°
60°
27
77°
58°
28
75°
54°
29
76°
55°
30
78°
57°
31
81°
61°
1
83°
62°
2
84°
62°
3
84°
61°
4
83°
61°
5
81°
60°
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 75° to 85°, with overnight lows between 54° and 72°. The average high for August is 80° with an average low of 61°. 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.