S
M
T
W
T
F
S
26
71°
48°
27
69°
46°
28
75°
49°
29
72°
53°
30
61°
42°
1
66°
38°
2
57°
39°
3
61°
32°
4
73°
40°
5
74°
42°
6
71°
57°
7
60°
45°
8
68°
33°
9
72°
40°
10
78°
43°
11
61°
41°
12
71°
35°
13
71°
42°
14
52°
44°
15
71°
39°
16
79°
46°
17
85°
53°
18
88°
55°
19
89°
58°
20
87°
55°
21
73°
59°
22
58°
52°
23
55°
50°
24
74°
52°
25
N/A
26
71°
60°
27
73°
62°
28
77°
52°
29
77°
53°
30
73°
47°
31
70°
47°
1
70°
47°
2
71°
51°
3
72°
50°
4
72°
54°
5
75°
55°
6
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Mechanicsburg
Mechanicsburg's May 2026 forecast shows daily high temperatures ranging from 70° to 77°, with overnight lows between 47° and 62°. The average high for May is 73° with an average low of 53°. 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 Mechanicsburg. See also: June | July | August.
