S
M
T
W
T
F
S
26
54°
35°
27
60°
35°
28
62°
37°
29
61°
36°
30
52°
38°
1
64°
34°
2
75°
40°
3
77°
43°
4
70°
38°
5
48°
37°
6
64°
40°
7
77°
45°
8
78°
46°
9
76°
45°
10
78°
45°
11
71°
43°
12
73°
45°
13
73°
43°
14
72°
44°
15
64°
41°
16
66°
39°
17
67°
40°
18
68°
40°
19
69°
41°
20
71°
45°
21
67°
44°
22
68°
41°
23
70°
41°
24
64°
42°
25
65°
40°
26
66°
41°
27
69°
40°
28
71°
41°
29
77°
45°
30
81°
51°
31
74°
51°
1
78°
50°
2
79°
48°
3
79°
49°
4
82°
50°
5
80°
51°
6
82°
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 48° to 82°, with overnight lows between 34° and 53°. The average high for May is 72° with an average low of 44°. 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.