S
M
T
W
T
F
S
30
80°
59°
31
77°
59°
1
80°
58°
2
76°
51°
3
70°
49°
4
78°
58°
5
80°
58°
6
80°
57°
7
79°
57°
8
79°
56°
9
78°
57°
10
77°
57°
11
69°
55°
12
72°
47°
13
70°
50°
14
74°
49°
15
70°
43°
16
67°
42°
17
66°
45°
18
65°
40°
19
64°
41°
20
65°
43°
21
65°
41°
22
67°
48°
23
72°
50°
24
73°
47°
25
74°
50°
26
74°
51°
27
73°
39°
28
67°
49°
29
68°
38°
30
64°
48°
1
70°
36°
2
71°
36°
3
59°
34°
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 59° to 80°, with overnight lows between 34° and 59°. The average high for September is 72° with an average low of 49°. 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.