S
M
T
W
T
F
S
26
86°
64°
27
86°
65°
28
87°
65°
29
87°
66°
30
88°
65°
31
87°
65°
1
89°
70°
2
91°
70°
3
91°
69°
4
90°
70°
5
91°
68°
6
90°
64°
7
85°
63°
8
85°
63°
9
86°
64°
10
86°
64°
11
88°
65°
12
87°
68°
13
89°
68°
14
90°
67°
15
91°
68°
16
91°
68°
17
90°
69°
18
89°
68°
19
89°
66°
20
84°
67°
21
86°
68°
22
87°
67°
23
86°
65°
24
88°
65°
25
86°
67°
26
88°
65°
27
89°
65°
28
86°
68°
29
87°
67°
30
88°
66°
31
88°
66°
1
87°
65°
2
87°
64°
3
86°
65°
4
87°
65°
5
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Windsor
Windsor's August 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 63° and 70°. The average high for August is 88° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Windsor. See also: September | October | November.