S
M
T
W
T
F
S
30
82°
64°
31
82°
66°
1
84°
66°
2
83°
62°
3
82°
57°
4
80°
56°
5
79°
56°
6
80°
57°
7
83°
58°
8
84°
63°
9
86°
64°
10
81°
56°
11
79°
56°
12
79°
60°
13
80°
54°
14
78°
54°
15
77°
53°
16
76°
52°
17
77°
54°
18
78°
57°
19
81°
60°
20
80°
58°
21
82°
59°
22
81°
60°
23
82°
60°
24
76°
59°
25
78°
59°
26
80°
58°
27
82°
58°
28
82°
57°
29
81°
57°
30
82°
56°
1
81°
58°
2
81°
50°
3
80°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shawneetown
Shawneetown's September 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 46° and 66°. The average high for September is 81° 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 Shawneetown. See also: October | November | December.