S
M
T
W
T
F
S
26
94°
73°
27
91°
78°
28
89°
77°
29
92°
76°
30
92°
76°
1
92°
76°
2
92°
76°
3
92°
75°
4
93°
72°
5
93°
74°
6
95°
72°
7
95°
75°
8
97°
75°
9
95°
74°
10
94°
73°
11
95°
76°
12
96°
73°
13
N/A
14
92°
75°
15
90°
75°
16
88°
74°
17
88°
74°
18
87°
74°
19
88°
75°
20
92°
72°
21
91°
70°
22
92°
71°
23
93°
73°
24
91°
71°
25
92°
72°
26
88°
71°
27
88°
69°
28
90°
70°
29
89°
69°
30
88°
69°
31
88°
70°
1
89°
69°
2
88°
71°
3
88°
72°
4
89°
72°
5
89°
71°
6
88°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Basin
Basin's May 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 69° and 75°. The average high for May is 89° with an average low of 72°. 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.