S
M
T
W
T
F
S
26
61°
43°
27
74°
39°
28
73°
51°
29
62°
49°
30
52°
40°
1
53°
36°
2
46°
34°
3
59°
34°
4
72°
49°
5
73°
57°
6
57°
47°
7
61°
37°
8
62°
40°
9
68°
49°
10
64°
48°
11
63°
39°
12
69°
40°
13
68°
48°
14
57°
42°
15
68°
39°
16
72°
51°
17
82°
60°
18
87°
66°
19
87°
65°
20
75°
50°
21
64°
47°
22
63°
52°
23
66°
57°
24
78°
61°
25
76°
60°
26
76°
62°
27
73°
56°
28
79°
49°
29
76°
51°
30
74°
50°
31
77°
56°
1
80°
57°
2
76°
56°
3
78°
57°
4
77°
52°
5
77°
57°
6
78°
56°
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 63° to 80°, with overnight lows between 49° and 62°. The average high for May is 75° 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.
