S
M
T
W
T
F
S
26
59°
38°
27
58°
39°
28
60°
40°
29
61°
38°
30
59°
39°
1
61°
42°
2
62°
40°
3
61°
39°
4
63°
45°
5
71°
47°
6
68°
42°
7
63°
43°
8
72°
50°
9
74°
51°
10
74°
46°
11
65°
42°
12
64°
42°
13
65°
46°
14
65°
47°
15
64°
49°
16
65°
51°
17
68°
52°
18
75°
44°
19
69°
46°
20
71°
47°
21
70°
46°
22
69°
45°
23
70°
46°
24
69°
45°
25
72°
47°
26
71°
48°
27
72°
48°
28
72°
47°
29
73°
52°
30
71°
51°
31
73°
49°
1
73°
56°
2
74°
52°
3
74°
51°
4
75°
57°
5
79°
54°
6
78°
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 58° to 79°, with overnight lows between 38° and 57°. The average high for May is 68° with an average low of 46°. 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.