S
M
T
W
T
F
S
30
82°
55°
31
80°
53°
1
81°
48°
2
80°
52°
3
81°
53°
4
85°
55°
5
86°
54°
6
84°
53°
7
83°
52°
8
87°
52°
9
87°
52°
10
Hist. Avg.
84°
50°
11
Hist. Avg.
84°
50°
12
Hist. Avg.
84°
50°
13
Hist. Avg.
84°
50°
14
Hist. Avg.
84°
50°
15
Hist. Avg.
84°
50°
16
Hist. Avg.
84°
50°
17
Hist. Avg.
83°
50°
18
Hist. Avg.
83°
49°
19
Hist. Avg.
83°
49°
20
Hist. Avg.
83°
49°
21
Hist. Avg.
83°
49°
22
Hist. Avg.
83°
49°
23
Hist. Avg.
82°
49°
24
Hist. Avg.
82°
49°
25
Hist. Avg.
82°
49°
26
Hist. Avg.
82°
48°
27
Hist. Avg.
82°
48°
28
Hist. Avg.
82°
48°
29
Hist. Avg.
81°
48°
30
Hist. Avg.
81°
48°
1
Hist. Avg.
81°
48°
2
Hist. Avg.
81°
48°
3
Hist. Avg.
81°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Windsor
Windsor's September 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 48° and 55°. The average high for September is 83° with an average low of 53°. 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.
