S
M
T
W
T
F
S
26
59°
40°
27
56°
39°
28
55°
38°
29
56°
37°
30
59°
43°
1
61°
44°
2
60°
42°
3
58°
40°
4
58°
43°
5
59°
41°
6
58°
41°
7
59°
44°
8
65°
45°
9
64°
45°
10
60°
44°
11
60°
45°
12
64°
46°
13
65°
45°
14
64°
43°
15
60°
41°
16
60°
41°
17
62°
46°
18
67°
47°
19
65°
45°
20
64°
47°
21
64°
47°
22
65°
46°
23
66°
48°
24
66°
47°
25
68°
47°
26
66°
46°
27
68°
49°
28
68°
48°
29
67°
48°
30
68°
47°
31
67°
45°
1
69°
46°
2
68°
49°
3
69°
47°
4
66°
44°
5
66°
45°
6
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grays
Grays's May 2026 forecast shows daily high temperatures ranging from 55° to 69°, with overnight lows between 37° and 49°. The average high for May is 63° with an average low of 44°. 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 Grays. See also: June | July | August.