S
M
T
W
T
F
S
30
90°
72°
31
88°
73°
1
88°
73°
2
87°
72°
3
88°
72°
4
87°
67°
5
86°
67°
6
86°
69°
7
87°
72°
8
86°
72°
9
86°
71°
10
87°
72°
11
88°
72°
12
88°
71°
13
85°
70°
14
85°
66°
15
84°
64°
16
83°
67°
17
84°
69°
18
86°
70°
19
86°
70°
20
87°
69°
21
86°
69°
22
87°
68°
23
85°
67°
24
84°
67°
25
83°
68°
26
84°
67°
27
86°
66°
28
88°
65°
29
89°
66°
30
90°
65°
1
89°
59°
2
86°
58°
3
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Springfield
Springfield's September 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 58° and 73°. The average high for September is 86° with an average low of 68°. 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 Springfield. See also: October | November | December.
