S
M
T
W
T
F
S
26
63°
50°
27
70°
47°
28
77°
43°
29
79°
47°
30
80°
45°
1
78°
50°
2
67°
50°
3
68°
49°
4
64°
51°
5
73°
51°
6
75°
50°
7
76°
48°
8
77°
50°
9
82°
49°
10
81°
51°
11
84°
51°
12
79°
50°
13
79°
51°
14
78°
50°
15
74°
48°
16
77°
51°
17
78°
50°
18
77°
50°
19
78°
51°
20
79°
51°
21
78°
50°
22
77°
51°
23
79°
52°
24
80°
52°
25
80°
51°
26
79°
50°
27
73°
51°
28
73°
50°
29
74°
51°
30
76°
51°
31
75°
52°
1
77°
52°
2
80°
53°
3
79°
52°
4
77°
51°
5
76°
51°
6
74°
49°
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 64° to 84°, with overnight lows between 48° and 53°. The average high for May is 76° with an average low of 51°. 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.