S
M
T
W
T
F
S
26
54°
22°
27
49°
32°
28
50°
28°
29
61°
32°
30
57°
24°
1
56°
37°
2
72°
41°
3
69°
47°
4
60°
32°
5
51°
32°
6
51°
31°
7
61°
38°
8
72°
41°
9
66°
42°
10
63°
41°
11
67°
45°
12
66°
42°
13
66°
44°
14
67°
43°
15
59°
43°
16
60°
48°
17
63°
48°
18
72°
49°
19
70°
50°
20
63°
48°
21
62°
42°
22
61°
41°
23
62°
42°
24
63°
45°
25
64°
48°
26
64°
51°
27
63°
50°
28
65°
48°
29
72°
51°
30
66°
45°
31
66°
54°
1
67°
54°
2
68°
56°
3
70°
56°
4
72°
55°
5
70°
57°
6
69°
57°
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 51° to 72°, with overnight lows between 31° and 57°. The average high for May is 65° with an average low of 46°. 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.