S
M
T
W
T
F
S
29
15°
0°
30
13°
1°
1
16°
-3°
2
6°
-5°
3
10°
0°
4
16°
1°
5
14°
2°
6
16°
1°
7
15°
0°
8
16°
1°
9
16°
0°
10
13°
0°
11
14°
1°
12
16°
-1°
13
15°
-1°
14
20°
2°
15
17°
-16°
16
16°
-17°
17
12°
-4°
18
4°
2°
19
16°
0°
20
15°
-8°
21
12°
-12°
22
11°
-11°
23
10°
-17°
24
7°
-18°
25
0°
-18°
26
-3°
-17°
27
-3°
-17°
28
-2°
-20°
29
-1°
-15°
30
9°
-18°
31
2°
-17°
1
-3°
-16°
2
-2°
-9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in McCarthy
McCarthy's December 2026 forecast shows daily high temperatures ranging from -3° to 20°, with overnight lows between -20° and 2°. The average high for December is 10° with an average low of -7°. 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 McCarthy. See also: January | February | March.
