S
M
T
W
T
F
S
30
86°
48°
31
76°
47°
1
75°
53°
2
80°
46°
3
78°
45°
4
73°
42°
5
72°
51°
6
80°
49°
7
82°
40°
8
72°
41°
9
71°
41°
10
71°
40°
11
70°
39°
12
70°
44°
13
74°
45°
14
75°
49°
15
77°
51°
16
80°
49°
17
79°
42°
18
69°
42°
19
68°
47°
20
74°
44°
21
71°
38°
22
73°
34°
23
65°
36°
24
66°
38°
25
72°
40°
26
73°
44°
27
Hist. Avg.
67°
40°
28
Hist. Avg.
66°
39°
29
Hist. Avg.
66°
39°
30
Hist. Avg.
65°
38°
1
Hist. Avg.
65°
38°
2
Hist. Avg.
64°
38°
3
Hist. Avg.
64°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cascade
Cascade's September 2026 forecast shows daily high temperatures ranging from 65° to 86°, with overnight lows between 34° and 53°. The average high for September is 74° with an average low of 44°. 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.
