S
M
T
W
T
F
S
30
91°
76°
31
92°
76°
1
94°
77°
2
93°
78°
3
84°
79°
4
85°
77°
5
88°
76°
6
92°
77°
7
89°
74°
8
89°
75°
9
90°
74°
10
92°
76°
11
93°
75°
12
94°
74°
13
91°
74°
14
91°
73°
15
92°
71°
16
91°
72°
17
89°
71°
18
85°
74°
19
85°
73°
20
86°
74°
21
87°
74°
22
88°
73°
23
88°
74°
24
86°
74°
25
86°
73°
26
87°
73°
27
87°
72°
28
86°
66°
29
83°
66°
30
84°
67°
1
83°
70°
2
84°
70°
3
82°
66°
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 82° to 94°, with overnight lows between 66° and 77°. The average high for September is 88° with an average low of 73°. 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.
