Guayama, Saturday, 8 August, 21:47
Light rain. Feels like 90°. High 90°, low 78°.
In December, Guayama, PR averages a high of 80.9° and a low of 73.4°. About 1.6 inches of precipitation fall over the month (13 wet days). The record high is 87.1° (2021) and the record low 64.6° (2025). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 81.7° | 73.9° | 45% | 87.1° (2021) | 68.5° (2001) |
| 2 | 81.5° | 73.9° | 42% | 85.6° (2021) | 69.1° (2005) |
| 3 | 81.3° | 74.1° | 40% | 85.6° (2023) | 70.7° (2010) |
| 4 | 81.1° | 73.8° | 47% | 85.1° (2021) | 69.4° (1996) |
| 5 | 81.3° | 73.9° | 47% | 85.3° (2024) | 68.5° (2022) |
| 6 | 81.3° | 74.1° | 43% | 86.5° (2024) | 69.6° (2022) |
| 7 | 81.1° | 73.8° | 47% | 86.2° (2024) | 67.6° (2022) |
| 8 | 81.1° | 73.8° | 38% | 85.5° (2023) | 66° (2022) |
| 9 | 81° | 73.9° | 33% | 84.7° (2024) | 69.3° (2022) |
| 10 | 81° | 73.6° | 53% | 84.2° (2021) | 65.1° (2022) |
| 11 | 81° | 73.6° | 45% | 85.8° (2021) | 68.2° (2022) |
| 12 | 81.3° | 73.6° | 40% | 85.3° (2024) | 66.9° (2022) |
| 13 | 81.1° | 73.6° | 40% | 85.3° (2024) | 68.2° (2022) |
| 14 | 81° | 73.4° | 45% | 84° (2021) | 69.4° (1960) |
| 15 | 80.8° | 73.4° | 45% | 84.4° (2025) | 69.8° (1965) |
| 16 | 80.8° | 73.4° | 52% | 84.4° (2024) | 70.2° (1966) |
| 17 | 81.1° | 73.4° | 32% | 85.5° (2024) | 69.8° (1996) |
| 18 | 80.8° | 73.2° | 35% | 84.7° (2025) | 66.6° (1982) |
| 19 | 80.8° | 73.2° | 38% | 84.7° (2025) | 67.6° (2008) |
| 20 | 81° | 73.2° | 42% | 84° (1997) | 69.3° (1977) |
| 21 | 80.8° | 73.2° | 28% | 84.9° (2021) | 68.5° (2023) |
| 22 | 80.8° | 73.2° | 37% | 84.2° (2025) | 69.6° (1964) |
| 23 | 80.8° | 73.2° | 32% | 83.7° (2023) | 68.7° (1964) |
| 24 | 80.8° | 73° | 50% | 84.7° (2025) | 68° (1991) |
| 25 | 80.6° | 72.9° | 33% | 84.6° (2023) | 66.9° (2010) |
| 26 | 80.6° | 72.9° | 33% | 83.8° (2012) | 67.5° (2025) |
| 27 | 81° | 72.7° | 43% | 86.2° (2021) | 67.8° (1976) |
| 28 | 80.4° | 72.5° | 35% | 84.6° (2021) | 64.6° (2025) |
| 29 | 80.4° | 72.5° | 27% | 85.3° (2021) | 65.8° (2025) |
| 30 | 80.2° | 72.5° | 48% | 84.2° (2021) | 66.7° (2024) |
| 31 | 80.4° | 72.9° | 35% | 84.7° (2021) | 69.3° (1962) |