S
M
T
W
T
F
S
30
102°
76°
31
102°
75°
1
99°
77°
2
102°
75°
3
89°
75°
4
99°
75°
5
100°
74°
6
99°
74°
7
101°
74°
8
101°
78°
9
99°
77°
10
100°
76°
11
98°
75°
12
102°
76°
13
100°
76°
14
99°
76°
15
99°
75°
16
100°
75°
17
97°
75°
18
95°
70°
19
90°
68°
20
88°
64°
21
88°
66°
22
89°
66°
23
88°
65°
24
87°
64°
25
91°
69°
26
90°
70°
27
90°
69°
28
89°
69°
29
90°
68°
30
86°
68°
1
89°
67°
2
88°
67°
3
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Terrell
Terrell's September 2026 forecast shows daily high temperatures ranging from 86° to 102°, with overnight lows between 64° and 76°. The average high for September is 92° with an average low of 70°. 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 Terrell. See also: October | November | December.
