S
M
T
W
T
F
S
28
84°
63°
29
88°
59°
30
90°
63°
1
97°
70°
2
102°
73°
3
100°
70°
4
95°
68°
5
84°
70°
6
72°
64°
7
73°
63°
8
86°
59°
9
82°
66°
10
86°
69°
11
83°
66°
12
85°
65°
13
88°
67°
14
95°
71°
15
97°
70°
16
89°
69°
17
91°
70°
18
87°
69°
19
81°
66°
20
85°
68°
21
85°
67°
22
84°
67°
23
83°
66°
24
89°
66°
25
83°
64°
26
83°
65°
27
88°
69°
28
87°
69°
29
88°
68°
30
87°
69°
31
82°
68°
1
84°
67°
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 81° to 97°, with overnight lows between 64° and 71°. The average high for July is 87° 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.