S
M
T
W
T
F
S
30
92°
67°
31
93°
66°
1
95°
68°
2
96°
70°
3
96°
72°
4
95°
72°
5
94°
67°
6
91°
67°
7
88°
67°
8
87°
63°
9
86°
62°
10
87°
61°
11
83°
58°
12
82°
57°
13
84°
60°
14
81°
57°
15
79°
61°
16
77°
61°
17
79°
60°
18
82°
60°
19
84°
61°
20
81°
60°
21
81°
59°
22
83°
59°
23
83°
58°
24
84°
59°
25
84°
59°
26
83°
57°
27
82°
58°
28
82°
58°
29
81°
57°
30
82°
57°
1
82°
56°
2
81°
56°
3
81°
55°
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 77° to 96°, with overnight lows between 55° and 72°. The average high for September is 85° with an average low of 61°. 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.
