S
M
T
W
T
F
S
29
47°
34°
30
49°
33°
1
48°
34°
2
49°
32°
3
48°
27°
4
42°
23°
5
47°
29°
6
48°
31°
7
40°
27°
8
35°
22°
9
35°
19°
10
34°
20°
11
33°
27°
12
34°
25°
13
35°
23°
14
33°
15°
15
33°
19°
16
34°
23°
17
35°
26°
18
34°
24°
19
40°
20°
20
36°
14°
21
33°
13°
22
30°
16°
23
29°
20°
24
31°
18°
25
34°
20°
26
31°
14°
27
30°
10°
28
28°
7°
29
27°
8°
30
28°
22°
31
36°
17°
1
40°
13°
2
29°
9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Garrett
Garrett's December 2026 forecast shows daily high temperatures ranging from 27° to 49°, with overnight lows between 7° and 34°. The average high for December is 36° with an average low of 21°. 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 Garrett. See also: January | February | March.