S
M
T
W
T
F
S
26
89°
70°
27
91°
69°
28
90°
72°
29
87°
71°
30
91°
72°
31
92°
72°
1
92°
71°
2
91°
72°
3
92°
72°
4
92°
71°
5
91°
71°
6
92°
70°
7
93°
72°
8
92°
71°
9
93°
72°
10
92°
72°
11
91°
71°
12
90°
71°
13
87°
70°
14
87°
70°
15
86°
66°
16
86°
68°
17
87°
68°
18
87°
69°
19
88°
70°
20
87°
70°
21
86°
69°
22
88°
68°
23
89°
69°
24
92°
69°
25
91°
70°
26
90°
69°
27
89°
67°
28
90°
68°
29
92°
67°
30
89°
69°
31
89°
68°
1
90°
68°
2
88°
67°
3
85°
67°
4
85°
62°
5
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in America
America's August 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 62° and 72°. The average high for August is 89° with an average low of 69°. 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 America. See also: September | October | November.