S
M
T
W
T
F
S
26
65°
38°
27
72°
31°
28
70°
40°
29
68°
46°
30
55°
46°
1
59°
43°
2
55°
35°
3
45°
37°
4
62°
50°
5
71°
54°
6
61°
39°
7
53°
35°
8
49°
34°
9
48°
37°
10
51°
34°
11
55°
37°
12
56°
41°
13
57°
40°
14
59°
43°
15
59°
44°
16
58°
41°
17
65°
47°
18
67°
46°
19
66°
46°
20
64°
47°
21
65°
46°
22
65°
47°
23
59°
39°
24
57°
40°
25
59°
40°
26
60°
46°
27
61°
41°
28
60°
41°
29
60°
42°
30
61°
42°
31
62°
50°
1
64°
44°
2
63°
43°
3
63°
49°
4
67°
49°
5
64°
47°
6
67°
52°
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 45° to 71°, with overnight lows between 34° and 54°. The average high for May is 60° with an average low of 43°. 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.