S
M
T
W
T
F
S
30
89°
67°
31
89°
67°
1
88°
66°
2
89°
66°
3
89°
65°
4
88°
64°
5
87°
62°
6
88°
65°
7
89°
65°
8
89°
66°
9
88°
66°
10
89°
65°
11
89°
66°
12
88°
66°
13
89°
65°
14
88°
63°
15
89°
62°
16
86°
63°
17
87°
62°
18
82°
54°
19
78°
53°
20
78°
53°
21
82°
54°
22
84°
53°
23
84°
58°
24
83°
59°
25
81°
52°
26
79°
53°
27
79°
56°
28
81°
56°
29
80°
55°
30
77°
53°
1
82°
53°
2
82°
54°
3
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fountain City
Fountain City's September 2026 forecast shows daily high temperatures ranging from 77° to 89°, with overnight lows between 52° and 67°. The average high for September is 85° with an average low of 60°. 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 Fountain City. See also: October | November | December.
