S
M
T
W
T
F
S
26
81°
50°
27
82°
59°
28
72°
60°
29
67°
48°
30
65°
42°
1
63°
43°
2
60°
41°
3
70°
37°
4
82°
55°
5
67°
46°
6
64°
46°
7
65°
42°
8
74°
41°
9
79°
51°
10
74°
56°
11
75°
47°
12
80°
48°
13
77°
54°
14
72°
48°
15
82°
49°
16
81°
69°
17
86°
68°
18
88°
65°
19
87°
64°
20
71°
60°
21
67°
60°
22
66°
62°
23
73°
62°
24
78°
62°
25
81°
65°
26
76°
66°
27
81°
65°
28
82°
64°
29
77°
62°
30
78°
55°
31
78°
56°
1
77°
60°
2
78°
59°
3
80°
62°
4
82°
63°
5
83°
65°
6
84°
66°
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 76° to 84°, with overnight lows between 55° and 66°. The average high for May is 80° with an average low of 62°. 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.
