S
M
T
W
T
F
S
30
90°
73°
31
93°
73°
1
93°
73°
2
92°
72°
3
93°
72°
4
91°
71°
5
90°
70°
6
92°
72°
7
87°
72°
8
86°
72°
9
86°
71°
10
87°
71°
11
86°
70°
12
86°
71°
13
88°
71°
14
87°
70°
15
88°
70°
16
85°
69°
17
85°
70°
18
87°
70°
19
88°
69°
20
89°
70°
21
89°
70°
22
88°
69°
23
89°
69°
24
89°
68°
25
88°
67°
26
88°
68°
27
87°
68°
28
88°
67°
29
87°
67°
30
87°
66°
1
86°
66°
2
87°
65°
3
85°
64°
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 93°, with overnight lows between 64° and 73°. The average high for September is 88° with an average low of 70°. 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.
