S
M
T
W
T
F
S
26
89°
65°
27
82°
65°
28
87°
64°
29
91°
63°
30
90°
70°
1
92°
71°
2
86°
64°
3
78°
60°
4
85°
60°
5
88°
60°
6
93°
63°
7
95°
69°
8
94°
72°
9
92°
71°
10
93°
72°
11
93°
73°
12
82°
71°
13
88°
71°
14
88°
67°
15
90°
63°
16
95°
70°
17
92°
73°
18
92°
67°
19
89°
72°
20
91°
68°
21
92°
71°
22
95°
74°
23
93°
71°
24
93°
71°
25
92°
75°
26
92°
76°
27
94°
73°
28
92°
73°
29
92°
73°
30
86°
72°
31
88°
73°
1
86°
72°
2
89°
74°
3
85°
68°
4
86°
67°
5
87°
69°
6
86°
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 85° to 92°, with overnight lows between 67° and 74°. The average high for May is 87° 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.
