S
M
T
W
T
F
S
26
53°
40°
27
62°
37°
28
61°
38°
29
64°
36°
30
64°
36°
1
64°
33°
2
70°
36°
3
69°
41°
4
63°
41°
5
59°
37°
6
49°
29°
7
64°
40°
8
70°
39°
9
71°
38°
10
70°
42°
11
78°
44°
12
78°
47°
13
82°
49°
14
83°
49°
15
80°
48°
16
70°
34°
17
71°
37°
18
74°
39°
19
71°
33°
20
72°
35°
21
74°
39°
22
75°
40°
23
75°
40°
24
70°
35°
25
69°
33°
26
73°
39°
27
76°
40°
28
69°
40°
29
70°
39°
30
69°
37°
31
70°
38°
1
70°
35°
2
71°
36°
3
72°
38°
4
71°
37°
5
71°
39°
6
76°
41°
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 49° to 83°, with overnight lows between 29° and 49°. The average high for May is 71° with an average low of 39°. 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.
