S
M
T
W
T
F
S
30
88°
75°
31
90°
75°
1
93°
74°
2
93°
74°
3
92°
75°
4
91°
76°
5
93°
76°
6
95°
73°
7
88°
72°
8
85°
73°
9
88°
71°
10
90°
73°
11
90°
71°
12
87°
72°
13
87°
72°
14
89°
71°
15
86°
70°
16
89°
69°
17
85°
69°
18
86°
67°
19
85°
64°
20
84°
66°
21
81°
65°
22
85°
68°
23
85°
69°
24
84°
68°
25
85°
68°
26
85°
67°
27
84°
68°
28
85°
68°
29
84°
67°
30
84°
67°
1
83°
66°
2
83°
65°
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 81° to 90°, with overnight lows between 64° and 73°. The average high for September is 85° with an average low of 68°. 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.
