S
M
T
W
T
F
S
30
91°
63°
31
83°
66°
1
85°
66°
2
83°
58°
3
85°
60°
4
81°
66°
5
89°
65°
6
88°
66°
7
89°
65°
8
90°
64°
9
88°
65°
10
86°
64°
11
87°
58°
12
84°
62°
13
Hist. Avg.
84°
61°
14
Hist. Avg.
84°
61°
15
Hist. Avg.
84°
61°
16
Hist. Avg.
83°
60°
17
Hist. Avg.
83°
60°
18
Hist. Avg.
82°
59°
19
Hist. Avg.
82°
59°
20
Hist. Avg.
82°
59°
21
Hist. Avg.
81°
58°
22
Hist. Avg.
81°
58°
23
Hist. Avg.
80°
57°
24
Hist. Avg.
80°
57°
25
Hist. Avg.
80°
57°
26
Hist. Avg.
79°
56°
27
Hist. Avg.
79°
56°
28
Hist. Avg.
78°
55°
29
Hist. Avg.
78°
55°
30
Hist. Avg.
78°
54°
1
Hist. Avg.
77°
54°
2
Hist. Avg.
77°
54°
3
Hist. Avg.
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dexter
Dexter's September 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 58° and 66°. The average high for September is 86° with an average low of 63°. 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 Dexter. See also: October | November | December.