S
M
T
W
T
F
S
30
82°
59°
31
79°
57°
1
77°
57°
2
77°
56°
3
76°
61°
4
76°
57°
5
80°
56°
6
76°
55°
7
75°
54°
8
74°
55°
9
74°
55°
10
77°
60°
11
79°
59°
12
73°
58°
13
72°
60°
14
Hist. Avg.
74°
59°
15
Hist. Avg.
74°
58°
16
Hist. Avg.
74°
58°
17
Hist. Avg.
73°
58°
18
Hist. Avg.
73°
57°
19
Hist. Avg.
73°
57°
20
Hist. Avg.
72°
56°
21
Hist. Avg.
72°
56°
22
Hist. Avg.
72°
56°
23
Hist. Avg.
71°
55°
24
Hist. Avg.
71°
55°
25
Hist. Avg.
71°
55°
26
Hist. Avg.
70°
54°
27
Hist. Avg.
70°
54°
28
Hist. Avg.
70°
53°
29
Hist. Avg.
69°
53°
30
Hist. Avg.
69°
53°
1
Hist. Avg.
68°
52°
2
Hist. Avg.
68°
52°
3
Hist. Avg.
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chesterfield
Chesterfield's September 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 54° and 61°. The average high for September is 76° with an average low of 57°. 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 Chesterfield. See also: October | November | December.
