S
M
T
W
T
F
S
31
48°
32°
1
52°
29°
2
58°
32°
3
59°
34°
4
61°
37°
5
63°
36°
6
57°
36°
7
58°
34°
8
57°
32°
9
61°
34°
10
65°
40°
11
64°
41°
12
64°
41°
13
67°
40°
14
67°
40°
15
66°
41°
16
66°
41°
17
65°
42°
18
61°
42°
19
62°
40°
20
61°
40°
21
60°
39°
22
60°
41°
23
61°
39°
24
62°
41°
25
62°
41°
26
63°
44°
27
61°
43°
28
61°
43°
29
62°
40°
30
60°
40°
1
61°
41°
2
61°
40°
3
60°
40°
4
60°
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 48° to 67°, with overnight lows between 29° and 44°. The average high for June is 61° with an average low of 39°. 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.