S
M
T
W
T
F
S
30
87°
66°
31
86°
66°
1
86°
65°
2
85°
65°
3
82°
62°
4
82°
58°
5
80°
57°
6
83°
59°
7
86°
61°
8
86°
63°
9
85°
63°
10
82°
57°
11
80°
56°
12
81°
57°
13
84°
55°
14
81°
54°
15
78°
53°
16
79°
54°
17
78°
53°
18
80°
54°
19
84°
57°
20
85°
58°
21
85°
59°
22
84°
60°
23
84°
59°
24
80°
57°
25
82°
57°
26
83°
58°
27
84°
56°
28
83°
57°
29
83°
57°
30
82°
56°
1
82°
56°
2
83°
55°
3
82°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Summertown
Summertown's September 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 48° and 66°. The average high for September is 83° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Summertown. See also: October | November | December.
