S
M
T
W
T
F
S
30
90°
77°
31
89°
79°
1
90°
79°
2
89°
79°
3
86°
79°
4
91°
77°
5
90°
76°
6
93°
74°
7
88°
75°
8
88°
75°
9
87°
74°
10
90°
76°
11
90°
75°
12
91°
76°
13
90°
74°
14
89°
76°
15
90°
75°
16
89°
76°
17
90°
75°
18
88°
73°
19
88°
75°
20
89°
73°
21
88°
72°
22
88°
75°
23
88°
74°
24
87°
74°
25
84°
73°
26
87°
74°
27
87°
74°
28
86°
73°
29
87°
74°
30
86°
74°
1
86°
73°
2
85°
73°
3
85°
72°
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 84° to 91°, with overnight lows between 72° and 76°. The average high for September is 88° with an average low of 74°. 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.
