S
M
T
W
T
F
S
26
45°
33°
27
62°
52°
28
47°
32°
29
61°
36°
30
57°
32°
1
57°
26°
2
76°
37°
3
71°
45°
4
61°
39°
5
51°
29°
6
57°
26°
7
67°
27°
8
75°
43°
9
65°
39°
10
71°
39°
11
90°
44°
12
75°
49°
13
83°
43°
14
80°
50°
15
82°
47°
16
81°
42°
17
70°
44°
18
45°
38°
19
57°
36°
20
65°
34°
21
74°
44°
22
62°
46°
23
75°
51°
24
87°
55°
25
89°
61°
26
86°
59°
27
82°
59°
28
77°
56°
29
76°
53°
30
73°
52°
31
74°
51°
1
74°
55°
2
79°
54°
3
79°
55°
4
80°
55°
5
76°
53°
6
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dallas
Dallas's May 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 51° and 61°. The average high for May is 79° 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 Dallas. See also: June | July | August.
