S
M
T
W
T
F
S
26
65°
52°
27
66°
46°
28
69°
42°
29
67°
36°
30
58°
36°
1
57°
33°
2
63°
31°
3
N/A
4
60°
41°
5
58°
40°
6
68°
54°
7
70°
47°
8
57°
48°
9
65°
42°
10
61°
36°
11
57°
34°
12
59°
35°
13
64°
40°
14
62°
37°
15
63°
38°
16
54°
34°
17
58°
39°
18
56°
39°
19
56°
34°
20
52°
34°
21
54°
35°
22
54°
38°
23
55°
38°
24
52°
37°
25
52°
37°
26
57°
36°
27
53°
34°
28
53°
36°
29
54°
37°
30
55°
37°
31
56°
38°
1
55°
38°
2
52°
37°
3
52°
37°
4
50°
36°
5
50°
35°
6
51°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Winchester
Winchester's May 2026 forecast shows daily high temperatures ranging from 50° to 70°, with overnight lows between 34° and 54°. The average high for May is 57° with an average low of 38°. 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.