S
M
T
W
T
F
S
28
79°
63°
29
78°
64°
30
79°
61°
1
76°
59°
2
77°
64°
3
77°
60°
4
78°
60°
5
79°
65°
6
82°
66°
7
85°
67°
8
86°
67°
9
86°
66°
10
85°
67°
11
84°
66°
12
85°
65°
13
81°
62°
14
83°
64°
15
84°
65°
16
80°
59°
17
77°
58°
18
76°
58°
19
77°
61°
20
78°
58°
21
77°
58°
22
77°
59°
23
80°
63°
24
84°
64°
25
84°
65°
26
83°
66°
27
79°
59°
28
77°
63°
29
81°
64°
30
78°
61°
31
80°
64°
1
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Summit
Summit's July 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 58° and 67°. The average high for July is 80° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Summit. See also: August | September | October.