S
M
T
W
T
F
S
26
61°
45°
27
72°
39°
28
68°
52°
29
64°
50°
30
50°
37°
1
57°
34°
2
46°
36°
3
59°
32°
4
72°
45°
5
75°
59°
6
63°
48°
7
61°
39°
8
61°
39°
9
66°
50°
10
63°
43°
11
61°
39°
12
68°
36°
13
66°
48°
14
50°
45°
15
66°
41°
16
73°
45°
17
84°
57°
18
88°
59°
19
82°
68°
20
73°
55°
21
63°
52°
22
63°
54°
23
60°
54°
24
75°
62°
25
76°
61°
26
76°
63°
27
74°
61°
28
78°
53°
29
76°
52°
30
70°
46°
31
69°
51°
1
72°
53°
2
74°
56°
3
73°
55°
4
75°
56°
5
78°
54°
6
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Southwest
Southwest's May 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 46° and 63°. The average high for May is 73° with an average low of 55°. 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 Southwest. See also: June | July | August.
