S
M
T
W
T
F
S
31
54°
33°
1
55°
34°
2
56°
34°
3
56°
35°
4
57°
37°
5
56°
38°
6
56°
36°
7
57°
34°
8
58°
36°
9
57°
34°
10
57°
37°
11
58°
38°
12
60°
41°
13
59°
40°
14
60°
40°
15
64°
42°
16
66°
43°
17
61°
41°
18
60°
39°
19
59°
38°
20
60°
41°
21
60°
42°
22
62°
40°
23
60°
39°
24
61°
40°
25
61°
42°
26
72°
43°
27
68°
40°
28
65°
43°
29
68°
46°
30
69°
47°
1
68°
42°
2
64°
42°
3
68°
47°
4
73°
50°
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 54° to 73°, with overnight lows between 33° and 50°. The average high for June is 61° with an average low of 40°. 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.