S
M
T
W
T
F
S
30
70°
36°
31
73°
41°
1
74°
40°
2
73°
40°
3
72°
38°
4
71°
39°
5
71°
36°
6
Hist. Avg.
75°
38°
7
Hist. Avg.
75°
38°
8
Hist. Avg.
75°
38°
9
Hist. Avg.
74°
38°
10
Hist. Avg.
74°
37°
11
Hist. Avg.
74°
37°
12
Hist. Avg.
73°
37°
13
Hist. Avg.
73°
37°
14
Hist. Avg.
72°
36°
15
Hist. Avg.
72°
36°
16
Hist. Avg.
72°
36°
17
Hist. Avg.
71°
36°
18
Hist. Avg.
71°
35°
19
Hist. Avg.
70°
35°
20
Hist. Avg.
70°
35°
21
Hist. Avg.
70°
34°
22
Hist. Avg.
69°
34°
23
Hist. Avg.
69°
34°
24
Hist. Avg.
68°
34°
25
Hist. Avg.
68°
34°
26
Hist. Avg.
67°
33°
27
Hist. Avg.
67°
33°
28
Hist. Avg.
66°
33°
29
Hist. Avg.
66°
32°
30
Hist. Avg.
65°
32°
1
Hist. Avg.
65°
32°
2
Hist. Avg.
64°
32°
3
Hist. Avg.
64°
31°
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 70° to 74°, with overnight lows between 36° and 41°. The average high for September is 72° with an average low of 39°. 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.
