S
M
T
W
T
F
S
26
58°
44°
27
74°
39°
28
58°
52°
29
58°
54°
30
68°
45°
1
66°
37°
2
62°
42°
3
66°
37°
4
77°
42°
5
84°
60°
6
69°
56°
7
73°
51°
8
70°
41°
9
63°
52°
10
69°
50°
11
67°
48°
12
73°
42°
13
71°
53°
14
57°
49°
15
76°
51°
16
82°
49°
17
90°
60°
18
96°
67°
19
94°
71°
20
86°
52°
21
66°
51°
22
61°
53°
23
63°
55°
24
73°
58°
25
76°
58°
26
81°
59°
27
79°
59°
28
80°
58°
29
81°
57°
30
82°
58°
31
84°
55°
1
81°
59°
2
78°
60°
3
74°
60°
4
78°
59°
5
75°
56°
6
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Orrstown
Orrstown's May 2026 forecast shows daily high temperatures ranging from 61° to 96°, with overnight lows between 51° and 71°. The average high for May is 78° with an average low of 58°. 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 Orrstown. See also: June | July | August.