S
M
T
W
T
F
S
26
71°
44°
27
66°
48°
28
60°
43°
29
53°
41°
30
53°
35°
1
52°
30°
2
60°
35°
3
71°
49°
4
75°
46°
5
53°
37°
6
44°
33°
7
57°
32°
8
70°
41°
9
62°
43°
10
61°
38°
11
63°
35°
12
77°
42°
13
65°
47°
14
73°
44°
15
82°
54°
16
81°
55°
17
64°
51°
18
77°
54°
19
65°
46°
20
62°
44°
21
55°
46°
22
61°
46°
23
68°
51°
24
80°
49°
25
82°
57°
26
85°
59°
27
90°
56°
28
84°
52°
29
87°
56°
30
87°
51°
31
79°
54°
1
82°
48°
2
83°
52°
3
79°
54°
4
78°
57°
5
79°
57°
6
82°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Coon Valley
Coon Valley's May 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 48° and 57°. The average high for May is 83° with an average low of 54°. 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 Coon Valley. See also: June | July | August.