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
74°
40°
4
67°
47°
5
68°
47°
6
55°
37°
7
65°
40°
8
72°
44°
9
69°
42°
10
74°
45°
11
80°
48°
12
86°
49°
13
81°
47°
14
77°
50°
15
71°
48°
16
75°
47°
17
80°
49°
18
78°
49°
19
77°
45°
20
72°
35°
21
65°
33°
22
65°
32°
23
66°
33°
24
66°
32°
25
67°
33°
26
70°
35°
27
75°
40°
28
72°
39°
29
74°
37°
30
76°
38°
31
77°
40°
1
74°
38°
2
73°
39°
3
78°
41°
4
73°
42°
5
71°
41°
6
70°
36°
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 65° to 86°, with overnight lows between 32° and 50°. The average high for May is 73° with an average low of 41°. 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.
