S
M
T
W
T
F
S
26
65°
46°
27
74°
48°
28
66°
52°
29
62°
45°
30
56°
41°
1
51°
39°
2
48°
33°
3
60°
34°
4
72°
57°
5
65°
45°
6
57°
39°
7
55°
41°
8
62°
46°
9
63°
47°
10
67°
47°
11
60°
45°
12
61°
47°
13
65°
51°
14
65°
46°
15
66°
48°
16
72°
52°
17
74°
50°
18
72°
56°
19
73°
55°
20
76°
50°
21
73°
50°
22
67°
46°
23
65°
46°
24
67°
48°
25
68°
50°
26
67°
49°
27
68°
49°
28
68°
50°
29
69°
50°
30
70°
54°
31
77°
58°
1
71°
53°
2
72°
54°
3
74°
58°
4
75°
57°
5
77°
60°
6
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gettysburg
Gettysburg's May 2026 forecast shows daily high temperatures ranging from 55° to 80°, with overnight lows between 39° and 61°. The average high for May is 69° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Gettysburg. See also: June | July | August.