S
M
T
W
T
F
S
26
45°
30°
27
52°
30°
28
46°
30°
29
50°
29°
30
49°
26°
1
52°
30°
2
62°
27°
3
62°
31°
4
57°
35°
5
59°
35°
6
44°
28°
7
57°
22°
8
68°
34°
9
67°
35°
10
68°
31°
11
75°
35°
12
78°
41°
13
81°
41°
14
73°
43°
15
79°
47°
16
77°
42°
17
61°
35°
18
49°
31°
19
55°
31°
20
63°
37°
21
70°
43°
22
75°
42°
23
72°
44°
24
74°
45°
25
70°
41°
26
68°
41°
27
68°
43°
28
70°
38°
29
64°
34°
30
67°
36°
31
73°
39°
1
74°
42°
2
75°
42°
3
76°
44°
4
77°
46°
5
76°
44°
6
76°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Basalt
Basalt's May 2026 forecast shows daily high temperatures ranging from 49° to 79°, with overnight lows between 31° and 47°. The average high for May is 70° with an average low of 40°. 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 Basalt. See also: June | July | August.