S
M
T
W
T
F
S
31
96°
62°
1
99°
67°
2
99°
67°
3
102°
68°
4
102°
72°
5
103°
72°
6
102°
75°
7
102°
70°
8
103°
74°
9
106°
74°
10
102°
71°
11
102°
73°
12
103°
75°
13
104°
74°
14
105°
76°
15
106°
77°
16
106°
77°
17
107°
78°
18
109°
73°
19
98°
78°
20
104°
75°
21
97°
74°
22
97°
70°
23
98°
72°
24
98°
72°
25
100°
75°
26
103°
77°
27
104°
77°
28
104°
78°
29
105°
79°
30
105°
78°
1
103°
78°
2
98°
75°
3
97°
74°
4
95°
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 95° to 109°, with overnight lows between 70° and 79°. The average high for June is 102° with an average low of 75°. 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.