S
M
T
W
T
F
S
26
69°
41°
27
70°
48°
28
62°
45°
29
49°
37°
30
53°
36°
1
46°
32°
2
53°
28°
3
61°
32°
4
72°
44°
5
58°
38°
6
55°
36°
7
53°
41°
8
61°
40°
9
58°
42°
10
60°
40°
11
60°
41°
12
61°
43°
13
63°
46°
14
60°
44°
15
64°
47°
16
69°
48°
17
68°
45°
18
63°
45°
19
68°
51°
20
65°
51°
21
66°
42°
22
64°
41°
23
62°
42°
24
64°
43°
25
64°
43°
26
65°
44°
27
64°
44°
28
65°
45°
29
66°
45°
30
67°
53°
31
70°
50°
1
68°
49°
2
69°
50°
3
72°
55°
4
73°
55°
5
75°
56°
6
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harrisburg
Harrisburg's May 2026 forecast shows daily high temperatures ranging from 53° to 77°, with overnight lows between 36° and 58°. 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 Harrisburg. See also: June | July | August.
