S
M
T
W
T
F
S
26
61°
50°
27
70°
41°
28
64°
43°
29
66°
55°
30
72°
50°
1
70°
36°
2
63°
43°
3
64°
34°
4
77°
41°
5
82°
43°
6
72°
61°
7
64°
43°
8
72°
36°
9
79°
41°
10
86°
48°
11
63°
41°
12
73°
34°
13
79°
43°
14
64°
43°
15
73°
39°
16
86°
46°
17
91°
55°
18
95°
61°
19
95°
61°
20
95°
59°
21
90°
57°
22
59°
54°
23
55°
52°
24
72°
55°
25
81°
64°
26
82°
70°
27
N/A
28
88°
55°
29
83°
60°
30
82°
52°
31
77°
55°
1
79°
55°
2
77°
52°
3
77°
56°
4
81°
58°
5
83°
63°
6
77°
57°
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 77° to 88°, with overnight lows between 52° and 63°. The average high for May is 80° with an average low of 56°. 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.
