S
M
T
W
T
F
S
26
45°
24°
27
46°
29°
28
54°
28°
29
59°
30°
30
60°
27°
1
68°
26°
2
75°
34°
3
74°
40°
4
62°
42°
5
51°
33°
6
60°
22°
7
67°
40°
8
71°
41°
9
64°
45°
10
77°
39°
11
90°
45°
12
80°
45°
13
96°
45°
14
79°
49°
15
77°
37°
16
74°
42°
17
59°
39°
18
49°
33°
19
62°
24°
20
71°
33°
21
50°
38°
22
64°
32°
23
79°
38°
24
83°
41°
25
88°
44°
26
83°
48°
27
88°
59°
28
91°
58°
29
89°
51°
30
80°
57°
31
67°
46°
1
78°
38°
2
85°
41°
3
84°
43°
4
85°
49°
5
93°
48°
6
98°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Winchester
Winchester's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Winchester. See also: June | July | August.