S
M
T
W
T
F
S
26
39°
21°
27
44°
25°
28
35°
20°
29
57°
27°
30
53°
24°
1
56°
32°
2
64°
38°
3
71°
39°
4
69°
40°
5
57°
29°
6
48°
20°
7
54°
34°
8
61°
40°
9
69°
50°
10
59°
39°
11
72°
40°
12
73°
38°
13
71°
39°
14
91°
37°
15
72°
42°
16
67°
37°
17
71°
37°
18
50°
27°
19
65°
37°
20
70°
44°
21
55°
40°
22
66°
43°
23
85°
55°
24
84°
54°
25
87°
57°
26
82°
53°
27
84°
53°
28
84°
55°
29
88°
57°
30
81°
53°
31
78°
52°
1
73°
55°
2
74°
51°
3
75°
53°
4
83°
54°
5
80°
56°
6
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Basin
Basin's May 2026 forecast shows daily high temperatures ranging from 50° to 88°, with overnight lows between 27° and 57°. The average high for May is 76° with an average low of 50°. 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 Basin. See also: June | July | August.
