S
M
T
W
T
F
S
30
88°
73°
31
89°
73°
1
91°
72°
2
91°
73°
3
92°
73°
4
91°
72°
5
89°
73°
6
87°
73°
7
89°
69°
8
90°
70°
9
91°
68°
10
90°
69°
11
91°
71°
12
90°
70°
13
91°
70°
14
91°
69°
15
88°
70°
16
86°
70°
17
86°
69°
18
86°
69°
19
85°
68°
20
88°
68°
21
88°
67°
22
87°
68°
23
86°
67°
24
85°
67°
25
85°
66°
26
84°
66°
27
84°
65°
28
85°
66°
29
86°
64°
30
85°
65°
1
84°
64°
2
82°
61°
3
83°
62°
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 61° and 73°. The average high for September is 88° with an average low of 69°. 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.
