S
M
T
W
T
F
S
30
78°
66°
31
79°
69°
1
83°
69°
2
83°
68°
3
82°
66°
4
82°
69°
5
81°
68°
6
81°
65°
7
77°
67°
8
75°
68°
9
78°
62°
10
79°
61°
11
75°
68°
12
77°
64°
13
81°
67°
14
78°
66°
15
76°
67°
16
74°
60°
17
79°
59°
18
75°
62°
19
Hist. Avg.
78°
57°
20
Hist. Avg.
77°
57°
21
Hist. Avg.
77°
56°
22
Hist. Avg.
76°
56°
23
Hist. Avg.
76°
56°
24
Hist. Avg.
76°
55°
25
Hist. Avg.
75°
55°
26
Hist. Avg.
75°
54°
27
Hist. Avg.
75°
54°
28
Hist. Avg.
74°
54°
29
Hist. Avg.
74°
53°
30
Hist. Avg.
74°
53°
1
Hist. Avg.
73°
52°
2
Hist. Avg.
73°
52°
3
Hist. Avg.
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Smithville
Smithville's September 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 59° and 69°. The average high for September is 79° with an average low of 66°. 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.
