S
M
T
W
T
F
S
30
74°
54°
31
77°
53°
1
69°
48°
2
71°
55°
3
79°
51°
4
72°
48°
5
71°
43°
6
70°
47°
7
75°
48°
8
75°
43°
9
71°
41°
10
64°
39°
11
64°
43°
12
65°
40°
13
64°
38°
14
62°
36°
15
61°
37°
16
60°
38°
17
60°
35°
18
61°
38°
19
61°
38°
20
62°
39°
21
66°
43°
22
69°
47°
23
69°
36°
24
67°
46°
25
64°
40°
26
66°
34°
27
56°
41°
28
57°
43°
29
57°
39°
30
58°
41°
1
56°
33°
2
58°
38°
3
56°
42°
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 56° to 79°, with overnight lows between 33° and 55°. The average high for September is 65° with an average low of 42°. 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.
