S
M
T
W
T
F
S
26
59°
42°
27
65°
40°
28
69°
53°
29
55°
44°
30
56°
42°
1
49°
37°
2
48°
36°
3
64°
34°
4
75°
48°
5
64°
47°
6
55°
46°
7
58°
42°
8
63°
40°
9
70°
48°
10
63°
40°
11
57°
37°
12
61°
33°
13
60°
45°
14
65°
42°
15
69°
38°
16
79°
54°
17
85°
59°
18
89°
65°
19
86°
54°
20
61°
41°
21
64°
49°
22
65°
52°
23
65°
55°
24
71°
58°
25
74°
58°
26
77°
60°
27
79°
59°
28
79°
59°
29
78°
60°
30
80°
63°
31
81°
61°
1
78°
55°
2
78°
59°
3
74°
60°
4
70°
59°
5
71°
59°
6
74°
62°
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 61° to 86°, with overnight lows between 41° and 63°. The average high for May is 74° with an average low of 57°. 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.