S
M
T
W
T
F
S
26
55°
44°
27
56°
41°
28
62°
45°
29
56°
42°
30
57°
46°
1
64°
44°
2
58°
42°
3
60°
47°
4
67°
51°
5
69°
50°
6
67°
51°
7
70°
53°
8
72°
53°
9
71°
52°
10
71°
50°
11
61°
48°
12
62°
51°
13
66°
52°
14
63°
50°
15
65°
51°
16
70°
54°
17
71°
54°
18
68°
44°
19
67°
44°
20
64°
46°
21
65°
45°
22
65°
45°
23
66°
48°
24
66°
53°
25
69°
49°
26
70°
51°
27
72°
48°
28
68°
53°
29
67°
56°
30
81°
50°
31
72°
57°
1
71°
54°
2
73°
53°
3
72°
58°
4
78°
53°
5
79°
52°
6
72°
53°
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 55° to 81°, with overnight lows between 41° and 58°. The average high for May is 67° 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.