S
M
T
W
T
F
S
26
65°
48°
27
73°
46°
28
70°
56°
29
62°
46°
30
56°
39°
1
53°
36°
2
N/A
3
60°
47°
4
72°
56°
5
64°
45°
6
56°
44°
7
53°
37°
8
57°
43°
9
60°
41°
10
65°
47°
11
64°
44°
12
65°
46°
13
66°
49°
14
68°
48°
15
69°
47°
16
68°
50°
17
76°
54°
18
72°
55°
19
75°
54°
20
75°
51°
21
74°
48°
22
68°
46°
23
66°
46°
24
68°
48°
25
67°
50°
26
67°
48°
27
68°
49°
28
69°
49°
29
70°
50°
30
71°
55°
31
77°
56°
1
72°
52°
2
73°
53°
3
75°
58°
4
76°
56°
5
79°
59°
6
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Harrisburg
Harrisburg's May 2026 forecast shows daily high temperatures ranging from 53° to 81°, with overnight lows between 37° 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 Harrisburg. See also: June | July | August.
