S
M
T
W
T
F
S
29
42°
21°
30
43°
23°
1
43°
25°
2
46°
30°
3
44°
31°
4
51°
34°
5
50°
34°
6
45°
33°
7
46°
30°
8
41°
28°
9
40°
24°
10
40°
22°
11
55°
35°
12
56°
25°
13
57°
23°
14
41°
20°
15
39°
23°
16
42°
20°
17
39°
25°
18
45°
33°
19
47°
35°
20
53°
35°
21
55°
33°
22
53°
34°
23
53°
35°
24
57°
30°
25
57°
22°
26
55°
18°
27
38°
24°
28
44°
31°
29
51°
33°
30
50°
34°
31
54°
36°
1
53°
30°
2
54°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Grayson
Grayson's December 2026 forecast shows daily high temperatures ranging from 38° to 57°, with overnight lows between 18° and 36°. The average high for December is 48° with an average low of 28°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Grayson. See also: January | February | March.
