S
M
T
W
T
F
S
30
77°
53°
31
79°
54°
1
80°
50°
2
76°
43°
3
68°
52°
4
72°
53°
5
67°
43°
6
70°
40°
7
66°
41°
8
67°
42°
9
66°
49°
10
70°
50°
11
73°
51°
12
71°
42°
13
69°
40°
14
62°
38°
15
60°
39°
16
62°
38°
17
64°
43°
18
69°
36°
19
61°
35°
20
59°
42°
21
61°
48°
22
67°
41°
23
67°
45°
24
65°
47°
25
68°
47°
26
68°
41°
27
67°
35°
28
58°
36°
29
55°
40°
30
55°
40°
1
56°
38°
2
57°
45°
3
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clearbrook
Clearbrook's September 2026 forecast shows daily high temperatures ranging from 55° to 80°, with overnight lows between 35° and 54°. The average high for September is 66° with an average low of 43°. 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 Clearbrook. See also: October | November | December.
