S
M
T
W
T
F
S
26
95°
75°
27
97°
77°
28
97°
77°
29
97°
77°
30
97°
75°
31
95°
75°
1
94°
76°
2
88°
72°
3
92°
68°
4
96°
67°
5
96°
69°
6
88°
71°
7
95°
71°
8
95°
71°
9
94°
70°
10
94°
73°
11
95°
73°
12
96°
74°
13
96°
76°
14
98°
73°
15
99°
73°
16
100°
76°
17
98°
75°
18
98°
74°
19
96°
74°
20
96°
73°
21
95°
72°
22
94°
71°
23
94°
69°
24
100°
72°
25
96°
71°
26
92°
72°
27
93°
71°
28
92°
70°
29
90°
69°
30
91°
72°
31
88°
73°
1
89°
73°
2
88°
72°
3
89°
72°
4
86°
67°
5
85°
66°
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 85° to 100°, with overnight lows between 66° and 75°. The average high for August is 93° with an average low of 71°. 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.
