S
M
T
W
T
F
S
26
48°
40°
27
47°
41°
28
52°
34°
29
58°
30°
30
53°
28°
1
55°
29°
2
71°
32°
3
71°
45°
4
62°
34°
5
51°
28°
6
48°
30°
7
62°
23°
8
74°
40°
9
61°
43°
10
60°
33°
11
74°
28°
12
73°
46°
13
78°
40°
14
79°
56°
15
86°
48°
16
77°
43°
17
78°
50°
18
57°
45°
19
53°
37°
20
64°
31°
21
69°
38°
22
55°
47°
23
68°
51°
24
87°
48°
25
95°
57°
26
88°
58°
27
94°
63°
28
93°
64°
29
89°
60°
30
82°
66°
31
68°
58°
1
82°
62°
2
88°
63°
3
86°
64°
4
82°
63°
5
82°
61°
6
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Appleton
Appleton's May 2026 forecast shows daily high temperatures ranging from 82° to 87°, with overnight lows between 61° and 66°. The average high for May is 84° with an average low of 63°. 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 Appleton. See also: June | July | August.