S
M
T
W
T
F
S
30
90°
70°
31
90°
69°
1
91°
68°
2
89°
70°
3
91°
69°
4
92°
72°
5
92°
72°
6
91°
71°
7
89°
70°
8
90°
71°
9
89°
70°
10
89°
70°
11
88°
69°
12
86°
70°
13
89°
70°
14
88°
69°
15
87°
69°
16
86°
68°
17
89°
68°
18
89°
67°
19
88°
68°
20
88°
67°
21
89°
67°
22
88°
66°
23
89°
67°
24
89°
66°
25
88°
65°
26
87°
64°
27
88°
65°
28
87°
65°
29
86°
64°
30
86°
64°
1
85°
63°
2
87°
63°
3
86°
61°
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 85° to 92°, with overnight lows between 61° and 72°. The average high for September is 88° 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.
