S
M
T
W
T
F
S
30
71°
53°
31
72°
54°
1
71°
48°
2
78°
46°
3
74°
47°
4
75°
52°
5
72°
51°
6
67°
52°
7
69°
49°
8
73°
44°
9
73°
52°
10
75°
53°
11
75°
46°
12
70°
42°
13
67°
47°
14
68°
53°
15
73°
41°
16
74°
41°
17
63°
40°
18
60°
39°
19
60°
38°
20
61°
44°
21
64°
40°
22
61°
38°
23
61°
36°
24
58°
35°
25
58°
36°
26
59°
38°
27
59°
38°
28
58°
44°
29
57°
36°
30
61°
41°
1
Hist. Avg.
60°
37°
2
Hist. Avg.
60°
37°
3
Hist. Avg.
59°
36°
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 57° to 78°, with overnight lows between 35° and 54°. The average high for September is 67° 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 Cavalier. See also: October | November | December.