S
M
T
W
T
F
S
26
91°
70°
27
90°
71°
28
89°
71°
29
86°
69°
30
88°
71°
31
91°
71°
1
91°
70°
2
90°
71°
3
92°
71°
4
92°
70°
5
91°
70°
6
91°
69°
7
92°
71°
8
91°
70°
9
92°
71°
10
92°
70°
11
89°
69°
12
89°
70°
13
87°
69°
14
86°
67°
15
85°
63°
16
84°
63°
17
85°
66°
18
85°
66°
19
86°
68°
20
88°
68°
21
85°
67°
22
86°
68°
23
88°
68°
24
91°
66°
25
89°
67°
26
86°
66°
27
85°
64°
28
86°
65°
29
90°
64°
30
87°
66°
31
86°
66°
1
86°
65°
2
85°
65°
3
82°
62°
4
82°
58°
5
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Summertown
Summertown's August 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 57° and 71°. The average high for August is 88° with an average low of 67°. 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 Summertown. See also: September | October | November.