S
M
T
W
T
F
S
26
63°
46°
27
78°
47°
28
74°
55°
29
63°
48°
30
58°
40°
1
53°
35°
2
51°
33°
3
62°
31°
4
72°
57°
5
70°
48°
6
59°
42°
7
56°
38°
8
64°
48°
9
62°
44°
10
64°
48°
11
62°
44°
12
63°
48°
13
67°
52°
14
65°
47°
15
66°
48°
16
70°
52°
17
73°
50°
18
75°
55°
19
73°
54°
20
77°
50°
21
73°
51°
22
68°
46°
23
66°
46°
24
68°
48°
25
68°
50°
26
69°
48°
27
69°
48°
28
70°
49°
29
70°
49°
30
71°
51°
31
76°
58°
1
72°
54°
2
73°
51°
3
73°
57°
4
75°
58°
5
78°
60°
6
81°
61°
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 56° to 81°, with overnight lows between 38° 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.
