S
M
T
W
T
F
S
29
78°
65°
30
79°
65°
1
78°
64°
2
78°
65°
3
77°
66°
4
79°
66°
5
79°
65°
6
78°
66°
7
79°
66°
8
78°
65°
9
78°
65°
10
77°
64°
11
78°
65°
12
77°
65°
13
78°
63°
14
77°
64°
15
78°
65°
16
77°
64°
17
78°
63°
18
78°
64°
19
77°
64°
20
78°
63°
21
78°
64°
22
77°
65°
23
78°
65°
24
78°
64°
25
77°
64°
26
76°
62°
27
77°
63°
28
77°
64°
29
76°
63°
30
77°
64°
31
76°
63°
1
77°
63°
2
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Coamo
Coamo's December 2026 forecast shows daily high temperatures ranging from 76° to 79°, with overnight lows between 62° and 66°. The average high for December is 78° with an average low of 64°. 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 Coamo. See also: January | February | March.
