S
M
T
W
T
F
S
30
89°
65°
31
86°
67°
1
88°
69°
2
89°
66°
3
84°
64°
4
85°
65°
5
84°
65°
6
88°
68°
7
88°
69°
8
87°
68°
9
87°
69°
10
86°
68°
11
87°
68°
12
87°
67°
13
86°
67°
14
87°
66°
15
84°
66°
16
86°
65°
17
85°
61°
18
82°
63°
19
83°
64°
20
84°
65°
21
85°
64°
22
80°
63°
23
84°
63°
24
83°
64°
25
83°
62°
26
84°
62°
27
79°
62°
28
Hist. Avg.
80°
60°
29
Hist. Avg.
80°
59°
30
Hist. Avg.
80°
59°
1
Hist. Avg.
80°
58°
2
Hist. Avg.
79°
58°
3
Hist. Avg.
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fairmont
Fairmont's September 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 61° and 69°. The average high for September is 85° with an average low of 65°. 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.
