S
M
T
W
T
F
S
28
88°
71°
29
88°
70°
30
87°
71°
1
86°
71°
2
86°
67°
3
79°
65°
4
80°
64°
5
81°
70°
6
85°
72°
7
84°
72°
8
85°
71°
9
87°
71°
10
82°
67°
11
82°
69°
12
83°
72°
13
88°
71°
14
89°
65°
15
82°
71°
16
85°
70°
17
83°
67°
18
83°
65°
19
82°
64°
20
82°
66°
21
84°
72°
22
85°
66°
23
84°
65°
24
81°
65°
25
82°
71°
26
82°
73°
27
83°
72°
28
86°
67°
29
82°
64°
30
81°
63°
31
81°
63°
1
82°
64°
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 79° to 89°, with overnight lows between 63° and 73°. The average high for July 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 July weather will actually feel in Summit. See also: August | September | October.