S
M
T
W
T
F
S
28
66°
45°
29
63°
40°
30
64°
43°
1
64°
43°
2
70°
45°
3
71°
48°
4
72°
47°
5
72°
48°
6
71°
46°
7
66°
42°
8
63°
42°
9
64°
43°
10
64°
43°
11
66°
44°
12
65°
43°
13
63°
42°
14
68°
45°
15
71°
47°
16
70°
43°
17
65°
42°
18
67°
47°
19
69°
42°
20
62°
42°
21
62°
43°
22
61°
39°
23
63°
42°
24
68°
46°
25
67°
44°
26
60°
46°
27
66°
42°
28
60°
44°
29
60°
41°
30
61°
42°
31
60°
41°
1
59°
42°
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 59° to 72°, with overnight lows between 39° and 48°. The average high for July is 65° with an average low of 44°. 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.