S
M
T
W
T
F
S
31
78°
56°
1
76°
52°
2
76°
52°
3
79°
54°
4
83°
61°
5
85°
65°
6
83°
67°
7
83°
69°
8
80°
68°
9
82°
69°
10
81°
67°
11
82°
67°
12
82°
65°
13
81°
64°
14
80°
62°
15
78°
60°
16
74°
59°
17
76°
60°
18
77°
61°
19
78°
62°
20
77°
65°
21
78°
66°
22
80°
67°
23
79°
67°
24
80°
65°
25
81°
67°
26
83°
68°
27
83°
68°
28
80°
66°
29
80°
62°
30
79°
61°
1
80°
61°
2
80°
62°
3
81°
68°
4
81°
63°
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 74° to 85°, with overnight lows between 52° and 69°. The average high for June is 80° with an average low of 64°. 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.