S
M
T
W
T
F
S
30
85°
66°
31
85°
65°
1
86°
65°
2
86°
67°
3
87°
67°
4
88°
65°
5
88°
69°
6
85°
68°
7
84°
66°
8
88°
66°
9
88°
67°
10
87°
66°
11
87°
66°
12
86°
65°
13
86°
65°
14
85°
64°
15
86°
65°
16
86°
65°
17
85°
66°
18
Hist. Avg.
83°
62°
19
Hist. Avg.
82°
61°
20
Hist. Avg.
82°
61°
21
Hist. Avg.
82°
60°
22
Hist. Avg.
82°
60°
23
Hist. Avg.
81°
60°
24
Hist. Avg.
81°
59°
25
Hist. Avg.
81°
59°
26
Hist. Avg.
80°
58°
27
Hist. Avg.
80°
58°
28
Hist. Avg.
80°
58°
29
Hist. Avg.
79°
57°
30
Hist. Avg.
79°
57°
1
Hist. Avg.
79°
56°
2
Hist. Avg.
78°
56°
3
Hist. Avg.
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chapin
Chapin's September 2026 forecast shows daily high temperatures ranging from 84° to 88°, with overnight lows between 64° and 69°. The average high for September is 86° with an average low of 66°. 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 Chapin. See also: October | November | December.
