S
M
T
W
T
F
S
26
64°
49°
27
72°
52°
28
63°
52°
29
65°
44°
30
59°
39°
1
53°
42°
2
52°
34°
3
62°
38°
4
76°
52°
5
68°
45°
6
58°
44°
7
61°
38°
8
69°
51°
9
76°
55°
10
68°
51°
11
72°
42°
12
77°
40°
13
62°
45°
14
67°
40°
15
68°
44°
16
77°
61°
17
86°
63°
18
87°
68°
19
86°
68°
20
71°
56°
21
68°
52°
22
65°
53°
23
69°
58°
24
70°
53°
25
78°
55°
26
80°
63°
27
78°
62°
28
79°
56°
29
74°
55°
30
73°
50°
31
72°
52°
1
74°
55°
2
76°
52°
3
77°
56°
4
78°
58°
5
77°
58°
6
79°
57°
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 70° to 80°, with overnight lows between 50° and 63°. The average high for May is 76° with an average low of 56°. 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.