S
M
T
W
T
F
S
30
85°
62°
31
86°
67°
1
87°
66°
2
90°
67°
3
90°
68°
4
86°
67°
5
80°
67°
6
79°
60°
7
81°
54°
8
82°
58°
9
85°
60°
10
75°
70°
11
81°
65°
12
87°
64°
13
82°
66°
14
72°
53°
15
82°
50°
16
89°
58°
17
84°
68°
18
77°
62°
19
82°
61°
20
72°
66°
21
72°
61°
22
63°
56°
23
63°
52°
24
67°
41°
25
67°
43°
26
70°
45°
27
68°
50°
28
70°
54°
29
73°
56°
30
74°
55°
1
74°
54°
2
67°
50°
3
68°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fairmont
Fairmont's September 2026 forecast shows daily high temperatures ranging from 63° to 74°, with overnight lows between 41° and 57°. The average high for September is 69° with an average low of 51°. 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 Fairmont. See also: October | November | December.
