Isla Grande Airport (SIG) 15 Day Weather Forecast, San Juan Puerto Rico
Current weather conditions and 15 day weather forecast for Isla Grande Airport in San Juan, Puerto Rico including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at SIG
| 05 December 2025 Fri 24.1 ° C ( 75.4°F )  Light rain |
Feels Like : 26.1 ° C / 78.9°F Humidity : % 89 Pressure : 1016 mb Wind Speed : 14 kmph / 8.7 miles from ESE 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Isla Grande Airport, San Juan, Puerto Rico
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 05 December 2025 Fri |  Partly Cloudy |
24.4 ° C | 28.6 ° C | 26.1 ° C | % 78 | 24.8 km/h | 0% |
| 06 December 2025 Sat |  Cloudy |
25.2 ° C | 27 ° C | 26.1 ° C | % 78 | 23 km/h | 0% |
| 07 December 2025 Sun |  Patchy rain nearby |
24.9 ° C | 28.3 ° C | 26.8 ° C | % 80 | 23.8 km/h | 86% |
| 08 December 2025 Mon | Patchy rain nearby |
23.6 ° C | 28.8 ° C | 25.7 ° C | % 76 | 22 km/h | 86% |
| 09 December 2025 Tue | Patchy rain nearby |
23.1 ° C | 28.7 ° C | 24.7 ° C | % 77 | 21.6 km/h | 85% |
| 10 December 2025 Wed | Patchy rain nearby |
23.8 ° C | 28.4 ° C | 25.7 ° C | % 78 | 24.8 km/h | 85% |
| 11 December 2025 Thu | Patchy rain nearby |
24.8 ° C | 27.9 ° C | 25.9 ° C | % 80 | 28.4 km/h | 79% |
| 12 December 2025 Fri | Patchy rain nearby |
24.5 ° C | 28.1 ° C | 26 ° C | % 81 | 28.1 km/h | 89% |
| 13 December 2025 Sat | Patchy rain nearby |
24.9 ° C | 28.3 ° C | 26.3 ° C | % 79 | 27.7 km/h | 84% |
| 14 December 2025 Sun | Patchy rain nearby |
24.7 ° C | 27.7 ° C | 25.8 ° C | % 80 | 28.4 km/h | 89% |
| 15 December 2025 Mon | Patchy rain nearby |
24.4 ° C | 27.5 ° C | 25.4 ° C | % 81 | 23.8 km/h | 85% |
| 16 December 2025 Tue |  Moderate rain |
24.3 ° C | 25.9 ° C | 25 ° C | % 82 | 29.2 km/h | 86% |
| 17 December 2025 Wed | Patchy rain nearby |
24.2 ° C | 25.8 ° C | 24.8 ° C | % 81 | 29.2 km/h | 83% |
| 18 December 2025 Thu | Patchy rain nearby |
24.1 ° C | 26 ° C | 24.6 ° C | % 82 | 29.2 km/h | 89% |
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