S
M
T
W
T
F
S
30
87°
67°
31
94°
68°
1
97°
72°
2
96°
73°
3
98°
73°
4
99°
71°
5
89°
72°
6
85°
66°
7
84°
64°
8
85°
62°
9
88°
60°
10
92°
70°
11
79°
79°
12
89°
73°
13
88°
73°
14
87°
65°
15
82°
59°
16
83°
63°
17
88°
60°
18
91°
69°
19
85°
66°
20
87°
63°
21
88°
70°
22
85°
68°
23
68°
64°
24
66°
59°
25
69°
55°
26
71°
51°
27
77°
56°
28
78°
57°
29
77°
64°
30
83°
62°
1
86°
60°
2
89°
66°
3
74°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Windsor
Windsor's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Windsor. See also: October | November | December.
