S
M
T
W
T
F
S
30
96°
75°
31
97°
74°
1
99°
68°
2
99°
71°
3
97°
72°
4
97°
73°
5
100°
70°
6
96°
73°
7
87°
71°
8
99°
70°
9
82°
71°
10
86°
63°
11
84°
62°
12
84°
64°
13
79°
59°
14
88°
58°
15
92°
65°
16
86°
65°
17
93°
70°
18
95°
74°
19
93°
73°
20
74°
66°
21
68°
63°
22
67°
61°
23
72°
58°
24
72°
56°
25
67°
59°
26
75°
62°
27
68°
60°
28
78°
59°
29
83°
59°
30
80°
67°
1
72°
56°
2
70°
49°
3
74°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chillicothe
Chillicothe's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Chillicothe. See also: October | November | December.
