S
M
T
W
T
F
S
26
85°
65°
27
86°
73°
28
83°
70°
29
71°
63°
30
68°
58°
1
68°
55°
2
76°
50°
3
81°
48°
4
80°
62°
5
82°
64°
6
69°
55°
7
63°
51°
8
77°
55°
9
82°
61°
10
84°
59°
11
77°
53°
12
79°
56°
13
87°
64°
14
88°
60°
15
86°
63°
16
88°
65°
17
82°
58°
18
78°
63°
19
82°
64°
20
81°
64°
21
83°
58°
22
78°
56°
23
78°
57°
24
79°
58°
25
78°
58°
26
78°
57°
27
79°
58°
28
79°
59°
29
81°
63°
30
83°
65°
31
81°
66°
1
82°
66°
2
83°
64°
3
82°
67°
4
84°
67°
5
83°
68°
6
83°
68°
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 63° to 88°, with overnight lows between 51° and 68°. The average high for May is 81° with an average low of 61°. 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.
