S
M
T
W
T
F
S
26
60°
41°
27
59°
42°
28
59°
47°
29
60°
46°
30
59°
44°
31
58°
42°
1
59°
42°
2
60°
41°
3
65°
41°
4
62°
45°
5
60°
42°
6
59°
45°
7
65°
47°
8
62°
44°
9
59°
45°
10
63°
48°
11
65°
46°
12
65°
47°
13
64°
39°
14
65°
44°
15
67°
41°
16
65°
43°
17
64°
38°
18
62°
41°
19
58°
39°
20
56°
37°
21
56°
39°
22
62°
40°
23
61°
40°
24
62°
41°
25
57°
40°
26
55°
36°
27
58°
42°
28
61°
37°
29
55°
35°
30
57°
40°
31
61°
38°
1
55°
34°
2
53°
33°
3
51°
33°
4
50°
34°
5
51°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Summit
Summit's August 2026 forecast shows daily high temperatures ranging from 50° to 67°, with overnight lows between 30° and 48°. The average high for August is 60° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Summit. See also: September | October | November.
