S
M
T
W
T
F
S
30
88°
56°
31
81°
57°
1
80°
62°
2
86°
58°
3
86°
62°
4
84°
64°
5
88°
61°
6
87°
55°
7
78°
54°
8
78°
54°
9
79°
60°
10
84°
60°
11
85°
55°
12
78°
54°
13
77°
53°
14
78°
59°
15
82°
54°
16
85°
51°
17
76°
51°
18
75°
50°
19
75°
51°
20
76°
50°
21
73°
50°
22
73°
51°
23
74°
49°
24
74°
55°
25
78°
55°
26
80°
56°
27
81°
50°
28
76°
55°
29
77°
55°
30
78°
51°
1
72°
52°
2
73°
48°
3
70°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Big Clifty
Big Clifty's September 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 45° and 64°. The average high for September is 79° with an average low of 54°. 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 Big Clifty. See also: October | November | December.
