S
M
T
W
T
F
S
26
60°
38°
27
69°
38°
28
60°
47°
29
54°
48°
30
51°
39°
1
51°
35°
2
46°
36°
3
53°
35°
4
69°
44°
5
75°
50°
6
55°
42°
7
53°
37°
8
53°
41°
9
57°
46°
10
62°
42°
11
54°
34°
12
54°
35°
13
54°
39°
14
61°
40°
15
63°
46°
16
66°
44°
17
66°
47°
18
67°
48°
19
67°
48°
20
66°
46°
21
63°
42°
22
64°
42°
23
65°
43°
24
65°
43°
25
66°
48°
26
69°
48°
27
67°
46°
28
67°
44°
29
68°
43°
30
70°
49°
31
75°
53°
1
73°
51°
2
70°
47°
3
73°
52°
4
77°
55°
5
77°
56°
6
76°
55°
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 53° to 77°, with overnight lows between 34° and 56°. The average high for May is 65° with an average low of 45°. 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.