S
M
T
W
T
F
S
26
58°
48°
27
59°
46°
28
69°
46°
29
59°
44°
30
62°
49°
1
67°
48°
2
60°
44°
3
65°
50°
4
71°
53°
5
72°
54°
6
72°
55°
7
73°
56°
8
74°
57°
9
74°
53°
10
63°
51°
11
63°
50°
12
64°
52°
13
73°
53°
14
65°
51°
15
67°
52°
16
73°
57°
17
76°
58°
18
72°
47°
19
74°
47°
20
68°
49°
21
69°
48°
22
68°
50°
23
69°
49°
24
67°
55°
25
70°
59°
26
78°
55°
27
75°
57°
28
71°
63°
29
81°
60°
30
83°
52°
31
74°
60°
1
76°
57°
2
77°
59°
3
82°
62°
4
82°
55°
5
81°
53°
6
73°
53°
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 58° to 83°, with overnight lows between 44° and 63°. The average high for May is 71° with an average low of 53°. 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.
