S
M
T
W
T
F
S
30
87°
67°
31
93°
67°
1
95°
74°
2
94°
72°
3
95°
72°
4
96°
74°
5
95°
70°
6
83°
62°
7
82°
59°
8
88°
70°
9
84°
64°
10
79°
57°
11
81°
63°
12
86°
61°
13
81°
61°
14
77°
58°
15
76°
55°
16
76°
55°
17
79°
60°
18
75°
56°
19
74°
52°
20
78°
51°
21
77°
57°
22
73°
56°
23
75°
56°
24
80°
55°
25
81°
57°
26
81°
57°
27
80°
56°
28
81°
57°
29
80°
58°
30
80°
56°
1
77°
51°
2
69°
45°
3
65°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Normal
Normal's September 2026 forecast shows daily high temperatures ranging from 65° to 88°, with overnight lows between 42° and 70°. The average high for September is 78° with an average low of 56°. 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.
