S
M
T
W
T
F
S
26
64°
41°
27
64°
44°
28
64°
47°
29
51°
37°
30
51°
31°
1
46°
31°
2
57°
28°
3
68°
45°
4
76°
43°
5
55°
34°
6
54°
32°
7
55°
29°
8
68°
32°
9
65°
42°
10
60°
33°
11
58°
35°
12
74°
36°
13
61°
39°
14
69°
35°
15
79°
50°
16
81°
55°
17
72°
66°
18
79°
65°
19
72°
47°
20
59°
36°
21
61°
43°
22
65°
50°
23
75°
53°
24
78°
52°
25
71°
51°
26
75°
54°
27
74°
53°
28
73°
54°
29
71°
49°
30
75°
57°
31
74°
56°
1
75°
57°
2
75°
56°
3
67°
52°
4
67°
51°
5
70°
57°
6
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Horicon
Horicon's May 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 36° and 66°. The average high for May is 72° with an average low of 53°. 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 Horicon. See also: June | July | August.
