S
M
T
W
T
F
S
30
80°
56°
31
83°
61°
1
85°
61°
2
86°
60°
3
85°
57°
4
84°
61°
5
84°
59°
6
80°
60°
7
79°
59°
8
77°
59°
9
81°
54°
10
79°
53°
11
77°
60°
12
82°
58°
13
83°
58°
14
76°
59°
15
83°
58°
16
74°
54°
17
74°
57°
18
Hist. Avg.
76°
55°
19
Hist. Avg.
76°
55°
20
Hist. Avg.
76°
54°
21
Hist. Avg.
75°
54°
22
Hist. Avg.
75°
54°
23
Hist. Avg.
75°
53°
24
Hist. Avg.
74°
53°
25
Hist. Avg.
74°
53°
26
Hist. Avg.
74°
52°
27
Hist. Avg.
73°
52°
28
Hist. Avg.
73°
52°
29
Hist. Avg.
73°
51°
30
Hist. Avg.
72°
51°
1
Hist. Avg.
72°
50°
2
Hist. Avg.
72°
50°
3
Hist. Avg.
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Gettysburg
Gettysburg's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 53° and 61°. The average high for September is 81° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Gettysburg. See also: October | November | December.
