S
M
T
W
T
F
S
30
88°
63°
31
87°
60°
1
83°
59°
2
82°
60°
3
83°
62°
4
87°
65°
5
88°
65°
6
88°
64°
7
87°
63°
8
83°
58°
9
81°
57°
10
81°
57°
11
82°
56°
12
81°
56°
13
80°
57°
14
79°
56°
15
80°
57°
16
80°
59°
17
82°
58°
18
82°
60°
19
84°
56°
20
Hist. Avg.
81°
56°
21
Hist. Avg.
80°
55°
22
Hist. Avg.
80°
55°
23
Hist. Avg.
80°
54°
24
Hist. Avg.
79°
54°
25
Hist. Avg.
79°
53°
26
Hist. Avg.
78°
53°
27
Hist. Avg.
78°
52°
28
Hist. Avg.
78°
52°
29
Hist. Avg.
77°
51°
30
Hist. Avg.
77°
51°
1
Hist. Avg.
77°
50°
2
Hist. Avg.
76°
50°
3
Hist. Avg.
76°
50°
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 79° to 88°, with overnight lows between 56° and 65°. The average high for September is 83° with an average low of 59°. 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.