S
M
T
W
T
F
S
26
70°
50°
27
58°
45°
28
60°
43°
29
55°
36°
30
49°
32°
1
55°
34°
2
64°
30°
3
72°
46°
4
65°
42°
5
51°
37°
6
44°
33°
7
57°
36°
8
69°
32°
9
61°
42°
10
58°
35°
11
64°
35°
12
74°
47°
13
70°
46°
14
75°
39°
15
87°
53°
16
80°
51°
17
60°
51°
18
69°
54°
19
63°
47°
20
61°
41°
21
67°
44°
22
66°
51°
23
72°
48°
24
82°
43°
25
86°
55°
26
90°
60°
27
90°
58°
28
81°
55°
29
87°
60°
30
78°
52°
31
80°
54°
1
86°
53°
2
87°
57°
3
86°
58°
4
84°
58°
5
79°
54°
6
77°
55°
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 77° to 87°, with overnight lows between 52° and 60°. The average high for May is 83° with an average low of 56°. 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.
