S
M
T
W
T
F
S
26
86°
72°
27
88°
72°
28
89°
71°
29
86°
68°
30
73°
64°
1
64°
52°
2
71°
51°
3
76°
48°
4
76°
52°
5
79°
62°
6
86°
62°
7
74°
63°
8
73°
68°
9
77°
65°
10
86°
66°
11
79°
53°
12
80°
57°
13
83°
64°
14
84°
66°
15
86°
70°
16
84°
70°
17
82°
68°
18
81°
69°
19
86°
67°
20
83°
69°
21
86°
68°
22
84°
70°
23
84°
70°
24
86°
69°
25
85°
69°
26
85°
70°
27
84°
70°
28
83°
69°
29
84°
70°
30
84°
69°
31
85°
67°
1
85°
67°
2
86°
70°
3
84°
70°
4
83°
71°
5
83°
72°
6
86°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Prairie
Grand Prairie's May 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 53° and 72°. The average high for May is 83° with an average low of 67°. 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 Grand Prairie. See also: June | July | August.