S
M
T
W
T
F
S
26
46°
28°
27
44°
38°
28
42°
35°
29
42°
27°
30
41°
24°
1
44°
35°
2
43°
35°
3
46°
33°
4
49°
35°
5
47°
37°
6
40°
31°
7
41°
29°
8
46°
26°
9
52°
31°
10
54°
33°
11
45°
34°
12
49°
32°
13
56°
35°
14
53°
31°
15
54°
39°
16
53°
38°
17
51°
40°
18
50°
39°
19
48°
36°
20
48°
30°
21
48°
29°
22
49°
32°
23
53°
27°
24
49°
32°
25
58°
38°
26
54°
37°
27
56°
34°
28
57°
28°
29
53°
39°
30
50°
37°
31
51°
36°
1
57°
44°
2
66°
35°
3
68°
34°
4
70°
34°
5
65°
39°
6
67°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Summit
Summit's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Summit. See also: June | July | August.
