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
68°
48°
5
71°
52°
6
62°
55°
7
59°
38°
8
56°
44°
9
59°
44°
10
62°
49°
11
63°
47°
12
61°
46°
13
60°
47°
14
63°
49°
15
65°
46°
16
65°
49°
17
64°
45°
18
71°
49°
19
69°
49°
20
72°
50°
21
69°
46°
22
68°
42°
23
63°
40°
24
64°
43°
25
65°
46°
26
67°
43°
27
64°
43°
28
66°
44°
29
66°
45°
30
67°
49°
31
70°
51°
1
71°
52°
2
68°
51°
3
69°
50°
4
69°
49°
5
73°
52°
6
75°
53°
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 56° to 75°, with overnight lows between 38° and 55°. The average high for May is 66° with an average low of 47°. 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.
