S
M
T
W
T
F
S
30
85°
47°
31
76°
49°
1
78°
50°
2
78°
47°
3
79°
47°
4
83°
52°
5
80°
46°
6
78°
45°
7
77°
45°
8
76°
44°
9
74°
44°
10
74°
45°
11
73°
47°
12
76°
49°
13
82°
50°
14
81°
49°
15
82°
52°
16
82°
46°
17
76°
42°
18
71°
41°
19
71°
40°
20
75°
43°
21
76°
43°
22
73°
42°
23
74°
50°
24
72°
47°
25
67°
43°
26
66°
46°
27
65°
43°
28
63°
38°
29
63°
42°
30
64°
48°
1
65°
49°
2
65°
39°
3
66°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cascade
Cascade's September 2026 forecast shows daily high temperatures ranging from 63° to 85°, with overnight lows between 37° and 52°. The average high for September is 74° with an average low of 45°. 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 Cascade. See also: October | November | December.
