S
M
T
W
T
F
S
26
89°
67°
27
89°
67°
28
88°
66°
29
86°
67°
30
87°
67°
31
89°
68°
1
90°
68°
2
88°
66°
3
89°
66°
4
89°
67°
5
88°
65°
6
83°
66°
7
86°
60°
8
83°
61°
9
83°
60°
10
82°
60°
11
85°
66°
12
89°
66°
13
89°
65°
14
88°
59°
15
83°
59°
16
83°
65°
17
84°
65°
18
85°
59°
19
83°
59°
20
82°
60°
21
83°
59°
22
85°
58°
23
86°
58°
24
85°
58°
25
85°
62°
26
86°
64°
27
87°
63°
28
86°
64°
29
88°
65°
30
87°
61°
31
84°
55°
1
81°
55°
2
79°
56°
3
80°
56°
4
80°
55°
5
81°
55°
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 79° to 90°, with overnight lows between 55° and 68°. The average high for August is 85° with an average low of 62°. 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.