S
M
T
W
T
F
S
30
87°
57°
31
79°
61°
1
80°
64°
2
82°
56°
3
85°
62°
4
85°
64°
5
86°
60°
6
86°
55°
7
77°
55°
8
77°
54°
9
78°
57°
10
83°
60°
11
83°
54°
12
76°
54°
13
77°
53°
14
76°
60°
15
82°
57°
16
83°
51°
17
76°
51°
18
73°
50°
19
73°
51°
20
74°
52°
21
71°
52°
22
71°
50°
23
72°
52°
24
72°
54°
25
77°
56°
26
78°
56°
27
79°
48°
28
75°
54°
29
73°
54°
30
77°
53°
1
70°
52°
2
71°
48°
3
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coal Grove
Coal Grove's September 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 45° and 64°. The average high for September is 77° with an average low of 55°. 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 Coal Grove. See also: October | November | December.