S
M
T
W
T
F
S
26
79°
58°
27
77°
59°
28
66°
56°
29
79°
60°
30
70°
55°
1
64°
51°
2
65°
50°
3
68°
42°
4
78°
45°
5
78°
50°
6
79°
63°
7
66°
54°
8
69°
49°
9
73°
54°
10
80°
59°
11
75°
61°
12
74°
57°
13
77°
53°
14
73°
54°
15
77°
46°
16
83°
55°
17
88°
64°
18
88°
62°
19
87°
63°
20
87°
64°
21
83°
67°
22
81°
68°
23
84°
67°
24
80°
68°
25
80°
67°
26
82°
67°
27
81°
68°
28
86°
68°
29
80°
68°
30
82°
67°
31
72°
64°
1
86°
65°
2
81°
57°
3
80°
58°
4
82°
61°
5
85°
65°
6
83°
66°
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 72° to 86°, with overnight lows between 57° and 67°. The average high for May is 81° with an average low of 63°. 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.
