S
M
T
W
T
F
S
30
90°
74°
31
93°
74°
1
94°
77°
2
94°
77°
3
87°
76°
4
89°
77°
5
91°
76°
6
90°
77°
7
91°
75°
8
90°
74°
9
91°
75°
10
89°
73°
11
82°
74°
12
89°
74°
13
89°
74°
14
93°
79°
15
96°
76°
16
90°
73°
17
92°
65°
18
94°
70°
19
93°
71°
20
91°
72°
21
89°
71°
22
88°
69°
23
88°
70°
24
87°
66°
25
86°
65°
26
88°
67°
27
85°
65°
28
80°
66°
29
83°
66°
30
85°
63°
1
86°
67°
2
82°
68°
3
85°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fountain
Fountain's September 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 63° and 72°. The average high for September is 87° 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 Fountain. See also: October | November | December.
