S
M
T
W
T
F
S
30
82°
62°
31
87°
68°
1
84°
69°
2
92°
70°
3
92°
70°
4
83°
67°
5
79°
57°
6
78°
57°
7
82°
59°
8
83°
67°
9
88°
64°
10
73°
53°
11
75°
55°
12
80°
58°
13
81°
59°
14
80°
56°
15
82°
56°
16
77°
54°
17
76°
54°
18
75°
48°
19
77°
54°
20
76°
54°
21
76°
53°
22
67°
52°
23
69°
52°
24
74°
51°
25
76°
53°
26
76°
51°
27
74°
51°
28
76°
53°
29
76°
53°
30
77°
52°
1
76°
51°
2
73°
44°
3
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fredericktown
Fredericktown's September 2026 forecast shows daily high temperatures ranging from 62° to 88°, with overnight lows between 41° and 67°. The average high for September is 76° with an average low of 54°. 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 Fredericktown. See also: October | November | December.