S
M
T
W
T
F
S
30
81°
62°
31
81°
59°
1
79°
59°
2
79°
54°
3
72°
54°
4
81°
54°
5
80°
63°
6
79°
67°
7
74°
63°
8
77°
56°
9
70°
52°
10
77°
55°
11
77°
52°
12
69°
49°
13
66°
50°
14
68°
49°
15
72°
53°
16
74°
52°
17
70°
50°
18
67°
44°
19
73°
49°
20
64°
46°
21
68°
50°
22
68°
51°
23
69°
49°
24
61°
48°
25
67°
48°
26
69°
49°
27
69°
49°
28
67°
47°
29
65°
47°
30
59°
46°
1
59°
44°
2
54°
40°
3
53°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cavalier
Cavalier's September 2026 forecast shows daily high temperatures ranging from 53° to 80°, with overnight lows between 40° and 67°. The average high for September is 68° with an average low of 50°. 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 Cavalier. See also: October | November | December.