S
M
T
W
T
F
S
29
32°
17°
30
30°
16°
1
29°
14°
2
28°
13°
3
28°
13°
4
29°
10°
5
28°
10°
6
26°
3°
7
24°
4°
8
18°
6°
9
17°
-2°
10
17°
-3°
11
12°
1°
12
11°
10°
13
21°
6°
14
25°
3°
15
23°
4°
16
17°
0°
17
21°
-2°
18
18°
4°
19
23°
5°
20
22°
2°
21
20°
-4°
22
17°
-2°
23
14°
3°
24
16°
6°
25
21°
6°
26
23°
4°
27
23°
1°
28
20°
2°
29
15°
4°
30
20°
-13°
31
24°
-16°
1
11°
-15°
2
0°
-5°
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 0° to 32°, with overnight lows between -16° and 17°. The average high for December is 21° with an average low of 3°. 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.
