S
M
T
W
T
F
S
26
78°
60°
27
85°
72°
28
79°
62°
29
66°
55°
30
63°
46°
1
69°
46°
2
72°
37°
3
80°
57°
4
76°
64°
5
80°
66°
6
73°
44°
7
69°
46°
8
75°
55°
9
78°
63°
10
76°
58°
11
77°
56°
12
78°
61°
13
80°
60°
14
79°
59°
15
88°
66°
16
77°
61°
17
73°
60°
18
73°
61°
19
78°
61°
20
77°
60°
21
80°
54°
22
72°
53°
23
73°
55°
24
73°
57°
25
74°
55°
26
73°
54°
27
74°
56°
28
75°
56°
29
76°
60°
30
77°
63°
31
76°
64°
1
76°
63°
2
77°
60°
3
78°
65°
4
79°
65°
5
78°
66°
6
78°
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 69° to 88°, with overnight lows between 37° and 66°. The average high for May is 76° with an average low of 59°. 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.
