S
M
T
W
T
F
S
29
87°
71°
30
86°
71°
1
86°
70°
2
87°
71°
3
87°
71°
4
86°
70°
5
87°
70°
6
87°
69°
7
86°
71°
8
84°
71°
9
86°
70°
10
87°
71°
11
86°
70°
12
85°
69°
13
86°
70°
14
86°
69°
15
85°
69°
16
87°
68°
17
87°
69°
18
86°
69°
19
86°
70°
20
85°
70°
21
86°
69°
22
86°
70°
23
87°
69°
24
85°
70°
25
86°
69°
26
86°
69°
27
85°
68°
28
85°
70°
29
86°
70°
30
87°
69°
31
87°
69°
1
86°
70°
2
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mayagüez
Mayagüez's December 2026 forecast shows daily high temperatures ranging from 84° to 87°, with overnight lows between 68° and 71°. The average high for December is 86° with an average low of 70°. 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 Mayagüez. See also: January | February | March.
