S
M
T
W
T
F
S
26
62°
23°
27
71°
24°
28
69°
28°
29
65°
45°
30
50°
37°
1
50°
31°
2
44°
34°
3
47°
31°
4
65°
39°
5
71°
46°
6
46°
38°
7
48°
27°
8
48°
24°
9
57°
20°
10
56°
30°
11
50°
24°
12
53°
24°
13
54°
34°
14
49°
42°
15
62°
42°
16
73°
34°
17
75°
50°
18
86°
42°
19
80°
59°
20
70°
50°
21
57°
27°
22
65°
24°
23
64°
29°
24
55°
45°
25
65°
45°
26
79°
41°
27
74°
49°
28
60°
37°
29
62°
37°
30
55°
40°
31
59°
40°
1
64°
41°
2
69°
41°
3
77°
49°
4
82°
55°
5
76°
57°
6
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Loon Lake
Loon Lake's May 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 40° and 57°. The average high for May is 70° with an average low of 47°. 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 Loon Lake. See also: June | July | August.