S
M
T
W
T
F
S
31
51°
36°
1
57°
44°
2
66°
35°
3
68°
34°
4
70°
34°
5
65°
39°
6
67°
38°
7
62°
42°
8
59°
41°
9
55°
32°
10
59°
37°
11
63°
40°
12
65°
41°
13
63°
46°
14
64°
44°
15
61°
40°
16
58°
39°
17
61°
38°
18
59°
41°
19
61°
43°
20
64°
42°
21
65°
44°
22
67°
41°
23
62°
43°
24
63°
43°
25
62°
42°
26
65°
46°
27
63°
46°
28
64°
45°
29
66°
46°
30
68°
47°
1
67°
47°
2
65°
46°
3
66°
47°
4
66°
47°
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 55° to 68°, with overnight lows between 32° and 47°. The average high for June is 63° 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 June weather will actually feel in Summit. See also: July | August | September.