S
M
T
W
T
F
S
26
54°
38°
27
53°
34°
28
55°
37°
29
55°
34°
30
53°
34°
1
56°
37°
2
57°
36°
3
56°
35°
4
59°
41°
5
67°
43°
6
65°
38°
7
62°
43°
8
68°
48°
9
70°
48°
10
70°
44°
11
60°
39°
12
58°
39°
13
61°
43°
14
60°
43°
15
60°
46°
16
61°
45°
17
61°
46°
18
71°
41°
19
65°
42°
20
66°
43°
21
64°
42°
22
64°
41°
23
63°
42°
24
64°
42°
25
66°
45°
26
66°
47°
27
67°
45°
28
67°
45°
29
68°
55°
30
68°
46°
31
73°
46°
1
67°
53°
2
69°
48°
3
74°
47°
4
70°
54°
5
76°
47°
6
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Clarks Summit
Clarks Summit's May 2026 forecast shows daily high temperatures ranging from 53° to 76°, with overnight lows between 34° and 55°. The average high for May is 64° with an average low of 43°. 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 Clarks Summit. See also: June | July | August.