S
M
T
W
T
F
S
26
68°
48°
27
61°
41°
28
69°
46°
29
68°
53°
30
60°
43°
1
62°
40°
2
53°
39°
3
57°
35°
4
69°
42°
5
68°
50°
6
71°
54°
7
54°
35°
8
63°
46°
9
63°
50°
10
68°
50°
11
56°
38°
12
56°
42°
13
59°
45°
14
60°
44°
15
64°
50°
16
66°
48°
17
65°
49°
18
70°
53°
19
71°
54°
20
70°
47°
21
65°
46°
22
65°
48°
23
66°
48°
24
65°
47°
25
66°
49°
26
67°
47°
27
67°
44°
28
68°
44°
29
71°
50°
30
71°
51°
31
68°
52°
1
67°
52°
2
71°
51°
3
74°
52°
4
71°
53°
5
71°
53°
6
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grayson
Grayson's May 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 35° and 54°. The average high for May is 66° with an average low of 48°. 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 Grayson. See also: June | July | August.
