S
M
T
W
T
F
S
29
35°
17°
30
31°
13°
1
32°
23°
2
41°
24°
3
42°
24°
4
38°
23°
5
36°
23°
6
32°
18°
7
31°
17°
8
42°
22°
9
44°
21°
10
43°
21°
11
44°
20°
12
43°
21°
13
44°
22°
14
38°
19°
15
34°
17°
16
38°
9°
17
35°
11°
18
31°
9°
19
32°
20°
20
36°
16°
21
37°
11°
22
35°
17°
23
33°
14°
24
38°
16°
25
32°
19°
26
38°
7°
27
37°
-1°
28
27°
6°
29
24°
4°
30
32°
3°
31
27°
17°
1
34°
21°
2
38°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Roy
Roy's December 2026 forecast shows daily high temperatures ranging from 24° to 44°, with overnight lows between -1° and 24°. The average high for December is 36° with an average low of 16°. 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 Roy. See also: January | February | March.
