S
M
T
W
T
F
S
30
99°
74°
31
86°
68°
1
96°
62°
2
97°
68°
3
93°
77°
4
96°
71°
5
100°
75°
6
103°
77°
7
100°
77°
8
100°
75°
9
103°
77°
10
102°
75°
11
101°
74°
12
97°
71°
13
99°
69°
14
98°
71°
15
86°
67°
16
82°
64°
17
87°
63°
18
89°
66°
19
88°
62°
20
90°
69°
21
91°
68°
22
87°
67°
23
88°
68°
24
86°
68°
25
88°
69°
26
88°
67°
27
89°
68°
28
88°
62°
29
84°
67°
30
86°
66°
1
89°
67°
2
90°
67°
3
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clifton
Clifton's September 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 62° and 69°. The average high for September is 87° with an average low of 66°. 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 Clifton. See also: October | November | December.