Las Casas Weather Forecast
- 75
- 87
Rain Showers
- 75
- 87
Rain Showers
- 77
- 87
Rain Showers
- 75
- 88
Rain Showers
- 75
- 88
Rain Showers
- 77
- 88
Mostly Sunny
Today 5 Dec San Juan and Vicinity
Partly cloudy with scattered Showers this Morning, then mostly sunny with isolated Showers this afternoon. Highs around 88. Temperature falling this afternoon. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 30 percent.
Tonight 5 Dec San Juan and Vicinity
Variably cloudy in the evening then clearing. Scattered Showers. Lows around 81. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.
Las Casas Temperature Statistics
December Temperature
San Juan, Luis Munoz Marin International Airport (2.5 miles)
Lowest 1 December, 2025
75 °FAverage December
79.8 °FHighest 3 December, 2025
86 °F
Climate (2020–Present)
San Juan, Luis Munoz Marin International Airport (2.5 miles)
Average Low 2020–2025
76.9 °FAverage 2020–2025
81.9 °FAverage High 2020–2025
87.5 °F