S
M
T
W
T
F
S
26
84°
69°
27
93°
74°
28
86°
59°
29
66°
60°
30
64°
51°
1
58°
50°
2
68°
53°
3
74°
56°
4
77°
61°
5
81°
63°
6
80°
64°
7
79°
57°
8
76°
55°
9
76°
59°
10
80°
64°
11
81°
61°
12
84°
64°
13
79°
58°
14
74°
57°
15
76°
58°
16
77°
59°
17
79°
62°
18
80°
61°
19
81°
64°
20
81°
64°
21
82°
66°
22
81°
68°
23
78°
66°
24
80°
68°
25
80°
67°
26
81°
66°
27
81°
66°
28
82°
65°
29
82°
64°
30
83°
65°
31
83°
67°
1
84°
68°
2
87°
70°
3
87°
72°
4
88°
72°
5
90°
73°
6
88°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grapevine
Grapevine's May 2026 forecast shows daily high temperatures ranging from 58° to 90°, with overnight lows between 50° and 73°. The average high for May is 79° 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 Grapevine. See also: June | July | August.
