S
M
T
W
T
F
S
30
92°
70°
31
97°
72°
1
99°
75°
2
100°
76°
3
99°
76°
4
99°
71°
5
97°
68°
6
88°
62°
7
88°
62°
8
93°
75°
9
96°
69°
10
88°
64°
11
85°
61°
12
87°
60°
13
90°
64°
14
83°
61°
15
82°
60°
16
86°
59°
17
74°
50°
18
77°
58°
19
77°
61°
20
83°
60°
21
81°
61°
22
80°
59°
23
78°
56°
24
79°
58°
25
82°
58°
26
80°
53°
27
71°
47°
28
70°
46°
29
69°
49°
30
72°
46°
1
69°
49°
2
74°
54°
3
67°
51°
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 67° to 99°, with overnight lows between 46° and 75°. The average high for September is 82° with an average low of 58°. 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.
