S
M
T
W
T
F
S
30
78°
57°
31
77°
61°
1
77°
62°
2
78°
62°
3
84°
61°
4
81°
62°
5
83°
61°
6
84°
62°
7
78°
61°
8
79°
60°
9
77°
59°
10
79°
60°
11
77°
60°
12
76°
58°
13
75°
56°
14
77°
57°
15
77°
57°
16
79°
56°
17
79°
57°
18
78°
57°
19
78°
56°
20
80°
55°
21
79°
52°
22
80°
52°
23
79°
51°
24
75°
53°
25
75°
53°
26
74°
54°
27
76°
55°
28
78°
54°
29
80°
54°
30
81°
55°
1
80°
53°
2
80°
52°
3
78°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Letart
Letart's September 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 51° and 62°. The average high for September is 78° with an average low of 57°. 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 Letart. See also: October | November | December.