S
M
T
W
T
F
S
30
82°
74°
31
82°
75°
1
88°
80°
2
86°
78°
3
82°
78°
4
87°
78°
5
90°
75°
6
92°
76°
7
91°
76°
8
86°
76°
9
88°
79°
10
87°
77°
11
90°
76°
12
89°
76°
13
89°
77°
14
90°
80°
15
89°
80°
16
89°
79°
17
88°
80°
18
86°
80°
19
86°
80°
20
87°
81°
21
87°
80°
22
85°
80°
23
86°
81°
24
85°
80°
25
86°
80°
26
86°
81°
27
87°
80°
28
86°
81°
29
86°
80°
30
87°
80°
1
87°
81°
2
86°
80°
3
87°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Smart
Smart's September 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 75° and 81°. The average high for September is 88° with an average low of 79°. 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 Smart. See also: October | November | December.