S
M
T
W
T
F
S
30
95°
70°
31
97°
71°
1
97°
74°
2
96°
73°
3
94°
72°
4
90°
71°
5
93°
72°
6
95°
73°
7
96°
73°
8
95°
72°
9
95°
72°
10
94°
71°
11
94°
72°
12
93°
71°
13
93°
68°
14
87°
66°
15
86°
65°
16
87°
65°
17
91°
69°
18
91°
69°
19
86°
67°
20
85°
68°
21
92°
69°
22
91°
68°
23
89°
62°
24
90°
61°
25
82°
60°
26
84°
59°
27
84°
59°
28
Hist. Avg.
83°
62°
29
Hist. Avg.
82°
62°
30
Hist. Avg.
82°
62°
1
Hist. Avg.
82°
61°
2
Hist. Avg.
81°
61°
3
Hist. Avg.
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Terrell
Terrell's September 2026 forecast shows daily high temperatures ranging from 82° to 97°, with overnight lows between 59° and 74°. The average high for September is 91° 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 Terrell. See also: October | November | December.
