S
M
T
W
T
F
S
26
84°
60°
27
90°
68°
28
87°
62°
29
76°
56°
30
69°
52°
1
74°
50°
2
75°
45°
3
84°
46°
4
82°
58°
5
81°
56°
6
64°
46°
7
74°
50°
8
84°
57°
9
85°
64°
10
77°
49°
11
76°
53°
12
83°
59°
13
85°
60°
14
84°
64°
15
81°
65°
16
82°
62°
17
81°
61°
18
81°
63°
19
80°
59°
20
75°
64°
21
80°
63°
22
78°
64°
23
76°
64°
24
77°
63°
25
76°
64°
26
77°
64°
27
77°
63°
28
78°
63°
29
78°
62°
30
79°
65°
31
78°
62°
1
82°
63°
2
84°
66°
3
84°
66°
4
83°
67°
5
80°
67°
6
82°
68°
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 85°, with overnight lows between 46° and 68°. The average high for May is 79° with an average low of 62°. 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.
