S
M
T
W
T
F
S
26
85°
66°
27
87°
67°
28
80°
66°
29
81°
64°
30
87°
62°
31
89°
66°
1
81°
65°
2
73°
61°
3
82°
59°
4
85°
62°
5
85°
66°
6
83°
67°
7
83°
66°
8
84°
70°
9
87°
68°
10
83°
67°
11
80°
65°
12
80°
63°
13
78°
64°
14
79°
65°
15
80°
64°
16
77°
66°
17
85°
68°
18
84°
69°
19
86°
68°
20
81°
67°
21
81°
67°
22
83°
68°
23
85°
68°
24
82°
67°
25
80°
67°
26
81°
66°
27
81°
66°
28
79°
65°
29
81°
65°
30
79°
66°
31
82°
65°
1
81°
64°
2
75°
61°
3
74°
64°
4
74°
64°
5
79°
63°
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 73° to 87°, with overnight lows between 59° and 70°. The average high for August is 81° with an average low of 65°. 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.