S
M
T
W
T
F
S
26
38°
23°
27
38°
25°
28
54°
25°
29
51°
30°
30
57°
31°
1
66°
33°
2
73°
40°
3
71°
42°
4
56°
42°
5
43°
28°
6
61°
23°
7
62°
45°
8
69°
40°
9
63°
42°
10
77°
39°
11
84°
54°
12
76°
44°
13
91°
48°
14
70°
51°
15
71°
40°
16
68°
37°
17
50°
33°
18
45°
32°
19
61°
26°
20
42°
27°
21
37°
15°
22
45°
29°
23
52°
30°
24
56°
35°
25
65°
38°
26
61°
33°
27
54°
31°
28
55°
34°
29
60°
35°
30
63°
34°
31
64°
33°
1
62°
34°
2
56°
30°
3
56°
30°
4
57°
33°
5
55°
34°
6
50°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Beartooth Lake Campground
Beartooth Lake Campground's May 2026 forecast shows daily high temperatures ranging from 37° to 65°, with overnight lows between 15° and 38°. The average high for May is 55° with an average low of 31°. 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 Beartooth Lake Campground. See also: June | July | August.