S
M
T
W
T
F
S
26
81°
54°
27
77°
56°
28
77°
62°
29
79°
54°
30
74°
52°
1
67°
52°
2
64°
48°
3
65°
49°
4
71°
52°
5
76°
56°
6
74°
53°
7
75°
56°
8
78°
56°
9
79°
55°
10
73°
52°
11
74°
52°
12
79°
59°
13
81°
60°
14
82°
59°
15
74°
53°
16
72°
52°
17
73°
53°
18
74°
53°
19
76°
56°
20
78°
58°
21
81°
60°
22
82°
61°
23
81°
62°
24
82°
63°
25
83°
63°
26
84°
62°
27
80°
62°
28
79°
61°
29
78°
62°
30
78°
64°
31
80°
62°
1
80°
65°
2
81°
66°
3
80°
66°
4
80°
65°
5
81°
66°
6
80°
66°
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 64° to 84°, with overnight lows between 48° and 66°. The average high for May is 77° with an average low of 58°. 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.
