S
M
T
W
T
F
S
30
92°
71°
31
89°
70°
1
90°
69°
2
88°
67°
3
88°
66°
4
87°
66°
5
87°
67°
6
88°
67°
7
88°
68°
8
90°
71°
9
87°
70°
10
89°
70°
11
91°
69°
12
90°
71°
13
90°
71°
14
89°
70°
15
88°
69°
16
89°
69°
17
90°
70°
18
88°
68°
19
86°
67°
20
88°
67°
21
89°
68°
22
88°
62°
23
Hist. Avg.
87°
64°
24
Hist. Avg.
86°
64°
25
Hist. Avg.
86°
63°
26
Hist. Avg.
86°
63°
27
Hist. Avg.
85°
63°
28
Hist. Avg.
85°
62°
29
Hist. Avg.
85°
62°
30
Hist. Avg.
85°
62°
1
Hist. Avg.
84°
61°
2
Hist. Avg.
84°
61°
3
Hist. Avg.
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fairmount
Fairmount's September 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 62° and 71°. The average high for September is 89° with an average low of 68°. 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 Fairmount. See also: October | November | December.
