S
M
T
W
T
F
S
26
61°
39°
27
72°
36°
28
64°
36°
29
63°
48°
30
61°
46°
1
64°
39°
2
59°
45°
3
61°
43°
4
73°
37°
5
82°
45°
6
68°
54°
7
64°
45°
8
63°
39°
9
63°
46°
10
73°
48°
11
63°
45°
12
68°
39°
13
73°
46°
14
66°
48°
15
66°
46°
16
82°
41°
17
88°
54°
18
93°
57°
19
95°
73°
20
93°
60°
21
69°
53°
22
64°
50°
23
54°
52°
24
66°
55°
25
72°
59°
26
74°
60°
27
80°
58°
28
74°
58°
29
75°
57°
30
79°
60°
31
82°
63°
1
85°
57°
2
73°
55°
3
71°
56°
4
72°
60°
5
77°
58°
6
77°
59°
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 54° to 95°, with overnight lows between 50° and 73°. The average high for May is 75° 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 Summit. See also: June | July | August.
