S
M
T
W
T
F
S
30
90°
60°
31
93°
59°
1
93°
61°
2
90°
58°
3
88°
58°
4
88°
59°
5
89°
59°
6
89°
58°
7
88°
57°
8
88°
59°
9
87°
61°
10
88°
63°
11
87°
61°
12
88°
62°
13
90°
65°
14
93°
65°
15
94°
64°
16
94°
63°
17
93°
61°
18
92°
60°
19
91°
60°
20
89°
61°
21
92°
62°
22
92°
62°
23
91°
61°
24
86°
62°
25
81°
60°
26
80°
59°
27
81°
60°
28
82°
61°
29
83°
60°
30
82°
61°
1
81°
59°
2
80°
57°
3
87°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sunnybrook
Sunnybrook's September 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 57° and 65°. The average high for September is 88° with an average low of 61°. 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 Sunnybrook. See also: October | November | December.