S
M
T
W
T
F
S
26
82°
64°
27
85°
64°
28
83°
63°
29
83°
63°
30
81°
62°
31
77°
59°
1
78°
58°
2
78°
62°
3
77°
62°
4
78°
61°
5
83°
63°
6
85°
64°
7
86°
65°
8
86°
63°
9
85°
63°
10
86°
62°
11
86°
64°
12
85°
64°
13
85°
63°
14
77°
57°
15
77°
52°
16
79°
53°
17
78°
52°
18
79°
51°
19
80°
49°
20
75°
51°
21
75°
54°
22
76°
50°
23
77°
54°
24
80°
54°
25
79°
53°
26
84°
59°
27
83°
54°
28
84°
50°
29
74°
50°
30
72°
51°
31
72°
50°
1
73°
49°
2
73°
54°
3
79°
51°
4
78°
56°
5
73°
53°
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 72° to 86°, with overnight lows between 49° and 65°. The average high for August is 80° with an average low of 57°. 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.
