S
M
T
W
T
F
S
26
86°
58°
27
87°
63°
28
77°
65°
29
81°
61°
30
70°
56°
1
69°
50°
2
67°
43°
3
69°
49°
4
78°
55°
5
76°
64°
6
72°
54°
7
67°
45°
8
70°
51°
9
75°
53°
10
77°
55°
11
78°
57°
12
79°
57°
13
77°
58°
14
79°
56°
15
77°
61°
16
80°
61°
17
81°
60°
18
81°
62°
19
79°
62°
20
81°
63°
21
82°
62°
22
82°
63°
23
78°
63°
24
76°
62°
25
79°
64°
26
81°
64°
27
78°
63°
28
77°
59°
29
81°
62°
30
78°
59°
31
78°
63°
1
83°
64°
2
85°
65°
3
85°
65°
4
84°
64°
5
79°
64°
6
79°
61°
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 67° to 85°, with overnight lows between 43° and 65°. The average high for May is 78° with an average low of 59°. 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.