S
M
T
W
T
F
S
26
58°
43°
27
70°
39°
28
57°
47°
29
57°
51°
30
65°
43°
1
63°
37°
2
57°
43°
3
61°
40°
4
74°
38°
5
82°
54°
6
72°
55°
7
66°
50°
8
68°
40°
9
62°
49°
10
68°
49°
11
63°
45°
12
68°
38°
13
71°
52°
14
58°
49°
15
70°
45°
16
83°
61°
17
84°
60°
18
93°
66°
19
96°
68°
20
85°
56°
21
70°
48°
22
69°
52°
23
74°
54°
24
76°
56°
25
81°
59°
26
79°
60°
27
80°
61°
28
79°
55°
29
72°
59°
30
75°
60°
31
76°
56°
1
73°
54°
2
73°
53°
3
72°
53°
4
73°
54°
5
76°
61°
6
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mechanicsburg
Mechanicsburg's May 2026 forecast shows daily high temperatures ranging from 69° to 96°, with overnight lows between 45° and 68°. The average high for May is 78° with an average low of 57°. 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.
