S
M
T
W
T
F
S
26
86°
62°
27
85°
69°
28
79°
64°
29
75°
59°
30
66°
52°
1
69°
51°
2
73°
45°
3
76°
43°
4
83°
63°
5
76°
55°
6
62°
51°
7
65°
47°
8
72°
56°
9
78°
59°
10
79°
59°
11
77°
55°
12
79°
60°
13
77°
62°
14
80°
59°
15
82°
60°
16
83°
62°
17
78°
59°
18
77°
64°
19
79°
63°
20
78°
63°
21
80°
58°
22
73°
56°
23
74°
56°
24
74°
58°
25
72°
57°
26
74°
57°
27
75°
58°
28
76°
58°
29
77°
61°
30
80°
65°
31
79°
66°
1
78°
65°
2
79°
61°
3
79°
65°
4
80°
67°
5
79°
68°
6
80°
68°
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 62° to 83°, with overnight lows between 47° and 68°. The average high for May is 77° with an average low of 60°. 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.
