S
M
T
W
T
F
S
30
67°
53°
31
67°
52°
1
66°
51°
2
66°
51°
3
67°
52°
4
66°
49°
5
66°
49°
6
67°
47°
7
65°
52°
8
67°
51°
9
68°
49°
10
69°
52°
11
65°
53°
12
64°
51°
13
67°
50°
14
68°
47°
15
65°
47°
16
63°
51°
17
65°
52°
18
67°
50°
19
65°
52°
20
67°
53°
21
67°
52°
22
66°
52°
23
65°
51°
24
66°
50°
25
64°
51°
26
63°
49°
27
63°
51°
28
64°
49°
29
64°
48°
30
60°
45°
1
61°
50°
2
62°
46°
3
Hist. Avg.
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Belton
Belton's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 45° and 53°. The average high for September is 65° with an average low of 50°. 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 Belton. See also: October | November | December.