S
M
T
W
T
F
S
30
94°
70°
31
96°
71°
1
96°
75°
2
95°
72°
3
95°
72°
4
94°
74°
5
95°
74°
6
95°
73°
7
94°
73°
8
95°
74°
9
91°
72°
10
93°
73°
11
94°
72°
12
94°
73°
13
95°
72°
14
94°
71°
15
92°
66°
16
85°
64°
17
84°
69°
18
89°
69°
19
85°
68°
20
84°
66°
21
84°
65°
22
85°
68°
23
87°
68°
24
87°
67°
25
90°
68°
26
90°
68°
27
89°
65°
28
88°
65°
29
87°
66°
30
88°
65°
1
86°
64°
2
88°
66°
3
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Worth
Fort Worth's September 2026 forecast shows daily high temperatures ranging from 84° to 96°, with overnight lows between 64° and 75°. The average high for September is 90° with an average low of 69°. 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 Worth. See also: October | November | December.