S
M
T
W
T
F
S
26
60°
44°
27
68°
51°
28
64°
50°
29
57°
39°
30
56°
38°
1
50°
36°
2
56°
32°
3
67°
45°
4
81°
49°
5
60°
46°
6
58°
42°
7
61°
36°
8
65°
43°
9
76°
49°
10
62°
45°
11
56°
44°
12
74°
44°
13
59°
44°
14
65°
42°
15
76°
55°
16
83°
63°
17
87°
67°
18
80°
66°
19
79°
61°
20
61°
50°
21
61°
50°
22
67°
56°
23
63°
56°
24
73°
61°
25
80°
63°
26
82°
65°
27
75°
61°
28
75°
61°
29
74°
59°
30
73°
61°
31
72°
62°
1
74°
60°
2
73°
63°
3
75°
61°
4
74°
57°
5
74°
56°
6
69°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Crossing
Grand Crossing's May 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 53° and 65°. The average high for May is 73° with an average low of 60°. 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 Crossing. See also: June | July | August.