S
M
T
W
T
F
S
30
90°
66°
31
89°
65°
1
85°
62°
2
85°
60°
3
86°
60°
4
84°
59°
5
84°
60°
6
86°
60°
7
87°
64°
8
88°
59°
9
85°
59°
10
87°
62°
11
88°
63°
12
84°
63°
13
88°
62°
14
88°
62°
15
87°
61°
16
87°
62°
17
88°
61°
18
86°
61°
19
85°
60°
20
84°
60°
21
85°
59°
22
85°
54°
23
80°
58°
24
80°
59°
25
Hist. Avg.
82°
57°
26
Hist. Avg.
82°
56°
27
Hist. Avg.
81°
56°
28
Hist. Avg.
81°
56°
29
Hist. Avg.
81°
55°
30
Hist. Avg.
80°
55°
1
Hist. Avg.
80°
54°
2
Hist. Avg.
80°
54°
3
Hist. Avg.
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Normal
Normal's September 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 54° and 66°. The average high for September is 86° 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 Normal. See also: October | November | December.
