S
M
T
W
T
F
S
30
91°
67°
31
93°
70°
1
94°
68°
2
92°
68°
3
93°
69°
4
93°
70°
5
92°
68°
6
93°
70°
7
92°
68°
8
91°
69°
9
92°
70°
10
91°
69°
11
90°
68°
12
90°
68°
13
89°
67°
14
86°
68°
15
88°
68°
16
86°
67°
17
87°
67°
18
87°
66°
19
89°
66°
20
87°
65°
21
87°
66°
22
88°
65°
23
85°
66°
24
88°
65°
25
88°
63°
26
87°
64°
27
88°
63°
28
87°
63°
29
86°
62°
30
85°
63°
1
86°
62°
2
86°
62°
3
87°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Johnson
Fort Johnson's September 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 62° and 70°. The average high for September is 89° with an average low of 66°. 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 Fort Johnson. See also: October | November | December.
