S
M
T
W
T
F
S
26
66°
36°
27
72°
37°
28
64°
37°
29
55°
42°
30
46°
42°
1
60°
42°
2
45°
36°
3
51°
41°
4
65°
38°
5
73°
47°
6
61°
51°
7
63°
45°
8
57°
38°
9
60°
33°
10
66°
46°
11
61°
42°
12
57°
37°
13
53°
37°
14
64°
46°
15
59°
52°
16
76°
51°
17
82°
48°
18
68°
48°
19
90°
67°
20
86°
46°
21
64°
40°
22
64°
45°
23
65°
46°
24
64°
45°
25
65°
48°
26
65°
51°
27
68°
49°
28
70°
52°
29
74°
55°
30
75°
48°
31
65°
51°
1
68°
50°
2
65°
50°
3
64°
49°
4
64°
53°
5
65°
53°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Windsor
Windsor's May 2026 forecast shows daily high temperatures ranging from 64° to 90°, with overnight lows between 40° and 67°. The average high for May is 70° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Windsor. See also: June | July | August.