S
M
T
W
T
F
S
31
53°
29°
1
54°
31°
2
61°
34°
3
55°
31°
4
59°
32°
5
63°
36°
6
59°
33°
7
56°
32°
8
57°
35°
9
57°
34°
10
58°
35°
11
56°
34°
12
58°
34°
13
58°
38°
14
59°
36°
15
59°
36°
16
60°
37°
17
59°
36°
18
60°
38°
19
61°
41°
20
62°
42°
21
61°
43°
22
62°
44°
23
61°
44°
24
61°
40°
25
62°
39°
26
64°
43°
27
63°
45°
28
62°
45°
29
62°
43°
30
61°
42°
1
62°
43°
2
62°
45°
3
65°
44°
4
65°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Summit
Summit's June 2026 forecast shows daily high temperatures ranging from 53° to 65°, with overnight lows between 29° and 45°. The average high for June is 60° with an average low of 38°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Summit. See also: July | August | September.