S
M
T
W
T
F
S
26
74°
57°
27
74°
50°
28
61°
44°
29
61°
42°
30
66°
42°
1
65°
34°
2
63°
37°
3
80°
42°
4
82°
52°
5
60°
46°
6
60°
44°
7
69°
39°
8
64°
50°
9
84°
48°
10
69°
46°
11
79°
45°
12
81°
57°
13
78°
48°
14
78°
53°
15
87°
63°
16
88°
65°
17
84°
64°
18
82°
61°
19
64°
47°
20
66°
51°
21
59°
55°
22
63°
52°
23
73°
56°
24
77°
59°
25
76°
59°
26
80°
61°
27
76°
62°
28
76°
63°
29
77°
63°
30
77°
61°
31
79°
62°
1
78°
58°
2
80°
62°
3
74°
58°
4
75°
58°
5
80°
64°
6
79°
64°
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 59° to 80°, with overnight lows between 47° and 64°. The average high for May is 74° with an average low of 59°. 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.
