S
M
T
W
T
F
S
30
90°
73°
31
90°
73°
1
92°
73°
2
92°
72°
3
91°
71°
4
91°
71°
5
90°
70°
6
92°
72°
7
87°
72°
8
86°
72°
9
86°
71°
10
87°
71°
11
90°
71°
12
87°
71°
13
88°
70°
14
88°
71°
15
84°
70°
16
82°
70°
17
84°
71°
18
86°
70°
19
88°
70°
20
87°
69°
21
88°
70°
22
89°
70°
23
88°
68°
24
89°
69°
25
89°
69°
26
87°
68°
27
82°
68°
28
83°
67°
29
82°
67°
30
84°
66°
1
87°
66°
2
87°
65°
3
86°
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 92°, with overnight lows between 65° and 73°. The average high for September is 87° 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.
