S
M
T
W
T
F
S
30
79°
57°
31
86°
67°
1
84°
70°
2
89°
68°
3
88°
67°
4
84°
67°
5
79°
54°
6
79°
54°
7
80°
57°
8
82°
65°
9
88°
68°
10
80°
56°
11
76°
55°
12
79°
57°
13
77°
57°
14
78°
58°
15
77°
57°
16
78°
45°
17
76°
55°
18
72°
54°
19
78°
55°
20
77°
54°
21
76°
55°
22
76°
54°
23
73°
51°
24
69°
53°
25
76°
54°
26
73°
52°
27
66°
47°
28
65°
46°
29
64°
45°
30
64°
43°
1
62°
42°
2
64°
50°
3
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Smithville
Smithville's September 2026 forecast shows daily high temperatures ranging from 62° to 88°, with overnight lows between 42° and 68°. The average high for September is 75° with an average low of 54°. 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 Smithville. See also: October | November | December.
