S
M
T
W
T
F
S
26
64°
39°
27
63°
48°
28
57°
45°
29
63°
43°
30
70°
46°
1
68°
43°
2
63°
45°
3
55°
50°
4
55°
43°
5
54°
37°
6
54°
43°
7
59°
39°
8
63°
43°
9
61°
46°
10
55°
41°
11
54°
37°
12
54°
36°
13
54°
43°
14
N/A
15
53°
38°
16
53°
44°
17
57°
43°
18
56°
50°
19
62°
51°
20
64°
50°
21
71°
58°
22
73°
57°
23
71°
55°
24
69°
53°
25
66°
50°
26
67°
51°
27
59°
46°
28
58°
47°
29
58°
46°
30
59°
46°
31
59°
49°
1
62°
52°
2
65°
53°
3
66°
53°
4
66°
52°
5
65°
52°
6
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Middleton
Middleton's May 2026 forecast shows daily high temperatures ranging from 53° to 73°, with overnight lows between 38° and 58°. The average high for May is 63° with an average low of 50°. 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 Middleton. See also: June | July | August.