S
M
T
W
T
F
S
30
87°
70°
31
87°
71°
1
88°
71°
2
87°
70°
3
87°
71°
4
88°
71°
5
87°
70°
6
87°
70°
7
89°
69°
8
91°
70°
9
91°
68°
10
87°
68°
11
87°
69°
12
88°
69°
13
89°
68°
14
88°
69°
15
90°
68°
16
89°
69°
17
90°
68°
18
90°
66°
19
89°
67°
20
86°
69°
21
88°
66°
22
88°
68°
23
90°
69°
24
89°
68°
25
88°
68°
26
88°
67°
27
87°
68°
28
88°
68°
29
88°
67°
30
87°
66°
1
86°
67°
2
87°
62°
3
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Steinhatchee
Steinhatchee's September 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 61° and 71°. The average high for September is 88° with an average low of 68°. 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 Steinhatchee. See also: October | November | December.