S
M
T
W
T
F
S
30
86°
56°
31
N/A
1
91°
72°
2
84°
70°
3
89°
71°
4
87°
63°
5
81°
59°
6
77°
57°
7
78°
60°
8
77°
58°
9
79°
61°
10
83°
61°
11
77°
59°
12
77°
58°
13
78°
57°
14
77°
59°
15
74°
59°
16
72°
58°
17
72°
52°
18
69°
50°
19
69°
51°
20
71°
54°
21
74°
57°
22
77°
57°
23
77°
58°
24
76°
56°
25
75°
53°
26
74°
55°
27
75°
56°
28
75°
55°
29
76°
54°
30
70°
49°
1
67°
47°
2
68°
52°
3
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Indiantown Gap
Fort Indiantown Gap's September 2026 forecast shows daily high temperatures ranging from 67° to 91°, with overnight lows between 47° and 72°. The average high for September is 76° with an average low of 57°. 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 Indiantown Gap. See also: October | November | December.
