S
M
T
W
T
F
S
26
61°
49°
27
67°
40°
28
70°
37°
29
73°
47°
30
70°
52°
1
64°
52°
2
58°
40°
3
67°
46°
4
78°
54°
5
82°
58°
6
80°
63°
7
77°
48°
8
67°
44°
9
72°
54°
10
74°
57°
11
74°
56°
12
76°
55°
13
75°
57°
14
76°
56°
15
75°
60°
16
74°
60°
17
74°
61°
18
76°
61°
19
80°
62°
20
81°
62°
21
81°
61°
22
82°
63°
23
82°
63°
24
81°
62°
25
82°
63°
26
78°
62°
27
81°
63°
28
82°
64°
29
80°
64°
30
81°
63°
31
83°
64°
1
82°
64°
2
80°
65°
3
84°
64°
4
78°
63°
5
78°
61°
6
79°
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 58° to 84°, with overnight lows between 40° and 65°. The average high for May is 77° with an average low of 59°. 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.