S
M
T
W
T
F
S
26
86°
70°
27
93°
75°
28
84°
71°
29
71°
60°
30
64°
60°
1
65°
56°
2
78°
50°
3
82°
59°
4
81°
64°
5
91°
63°
6
63°
53°
7
74°
53°
8
76°
61°
9
91°
71°
10
80°
63°
11
79°
59°
12
86°
59°
13
91°
63°
14
92°
69°
15
89°
69°
16
88°
71°
17
88°
76°
18
91°
79°
19
86°
66°
20
83°
65°
21
78°
70°
22
88°
69°
23
86°
66°
24
88°
69°
25
87°
68°
26
87°
67°
27
83°
70°
28
88°
71°
29
90°
73°
30
91°
73°
31
94°
73°
1
92°
71°
2
86°
68°
3
84°
69°
4
85°
67°
5
88°
71°
6
88°
71°
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 83° to 94°, with overnight lows between 67° and 73°. The average high for May is 88° with an average low of 71°. 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.
