S
M
T
W
T
F
S
30
81°
61°
31
84°
63°
1
84°
63°
2
83°
62°
3
81°
61°
4
84°
63°
5
83°
62°
6
77°
60°
7
79°
61°
8
80°
61°
9
81°
54°
10
76°
55°
11
78°
62°
12
83°
61°
13
81°
60°
14
77°
61°
15
81°
60°
16
81°
61°
17
Hist. Avg.
77°
56°
18
Hist. Avg.
76°
55°
19
Hist. Avg.
76°
55°
20
Hist. Avg.
76°
54°
21
Hist. Avg.
75°
54°
22
Hist. Avg.
75°
54°
23
Hist. Avg.
75°
53°
24
Hist. Avg.
74°
53°
25
Hist. Avg.
74°
52°
26
Hist. Avg.
73°
52°
27
Hist. Avg.
73°
52°
28
Hist. Avg.
72°
51°
29
Hist. Avg.
72°
51°
30
Hist. Avg.
72°
50°
1
Hist. Avg.
71°
50°
2
Hist. Avg.
71°
50°
3
Hist. Avg.
70°
49°
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 76° to 84°, with overnight lows between 54° and 63°. The average high for September is 81° with an average low of 61°. 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.
