S
M
T
W
T
F
S
30
87°
71°
31
93°
70°
1
95°
71°
2
97°
72°
3
96°
72°
4
94°
72°
5
97°
69°
6
89°
67°
7
87°
68°
8
88°
63°
9
88°
61°
10
92°
65°
11
94°
74°
12
88°
71°
13
91°
73°
14
95°
70°
15
87°
63°
16
87°
60°
17
91°
59°
18
96°
65°
19
90°
72°
20
92°
65°
21
94°
64°
22
88°
69°
23
71°
66°
24
67°
60°
25
75°
49°
26
81°
50°
27
81°
51°
28
83°
57°
29
85°
59°
30
86°
63°
1
87°
67°
2
86°
65°
3
83°
64°
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 75° to 87°, with overnight lows between 49° and 67°. The average high for September is 83° 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 Fairmont. See also: October | November | December.
