S
M
T
W
T
F
S
26
64°
52°
27
69°
45°
28
72°
40°
29
76°
53°
30
72°
53°
1
60°
53°
2
57°
40°
3
67°
47°
4
78°
55°
5
82°
58°
6
82°
64°
7
79°
51°
8
70°
45°
9
73°
53°
10
78°
59°
11
79°
57°
12
79°
59°
13
77°
59°
14
78°
58°
15
77°
62°
16
76°
62°
17
76°
63°
18
78°
64°
19
82°
64°
20
83°
63°
21
83°
64°
22
84°
65°
23
84°
65°
24
83°
64°
25
83°
65°
26
80°
64°
27
84°
65°
28
83°
66°
29
81°
66°
30
82°
65°
31
85°
66°
1
84°
66°
2
81°
67°
3
85°
66°
4
79°
65°
5
79°
63°
6
80°
63°
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 57° to 85°, with overnight lows between 40° and 67°. The average high for May is 79° with an average low of 61°. 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.