S
M
T
W
T
F
S
31
74°
57°
1
71°
56°
2
75°
54°
3
82°
53°
4
90°
69°
5
80°
67°
6
82°
66°
7
80°
70°
8
80°
71°
9
85°
69°
10
86°
73°
11
89°
73°
12
87°
74°
13
87°
68°
14
86°
68°
15
82°
65°
16
83°
66°
17
82°
63°
18
85°
67°
19
85°
68°
20
84°
68°
21
81°
61°
22
77°
61°
23
80°
69°
24
87°
71°
25
88°
65°
26
81°
65°
27
79°
67°
28
81°
69°
29
84°
70°
30
84°
69°
1
83°
70°
2
84°
71°
3
88°
71°
4
87°
72°
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 77° to 90°, with overnight lows between 61° and 74°. The average high for June is 84° with an average low of 68°. 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.