S
M
T
W
T
F
S
31
80°
47°
1
76°
50°
2
80°
50°
3
83°
48°
4
85°
48°
5
87°
55°
6
86°
61°
7
90°
61°
8
90°
64°
9
83°
67°
10
91°
68°
11
90°
68°
12
86°
64°
13
87°
57°
14
86°
59°
15
76°
54°
16
81°
53°
17
85°
56°
18
81°
63°
19
81°
58°
20
85°
56°
21
86°
58°
22
84°
63°
23
81°
58°
24
83°
61°
25
88°
67°
26
84°
68°
27
83°
66°
28
89°
69°
29
92°
68°
30
91°
70°
1
93°
69°
2
89°
70°
3
87°
68°
4
86°
67°
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 81° to 93°, with overnight lows between 58° and 70°. The average high for June is 87° with an average low of 66°. 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.