S
M
T
W
T
F
S
30
81°
67°
31
83°
67°
1
85°
66°
2
86°
62°
3
83°
63°
4
84°
61°
5
83°
60°
6
81°
61°
7
83°
63°
8
86°
64°
9
87°
64°
10
88°
65°
11
87°
63°
12
85°
61°
13
89°
52°
14
82°
57°
15
88°
61°
16
86°
60°
17
79°
60°
18
82°
59°
19
86°
53°
20
80°
50°
21
77°
50°
22
77°
50°
23
76°
51°
24
78°
55°
25
77°
55°
26
74°
54°
27
80°
56°
28
83°
51°
29
79°
51°
30
82°
56°
1
83°
45°
2
84°
42°
3
79°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thayer
Thayer's September 2026 forecast shows daily high temperatures ranging from 74° to 89°, with overnight lows between 42° and 67°. The average high for September is 82° 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 Thayer. See also: October | November | December.
