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
| 24 April 2026 Fri 22.9 ° C ( 73.3°F )  Clear |
Feels Like : 25 ° C / 77.1°F Humidity : % 80 Pressure : 1012 mb Wind Speed : 9 kmph / 5.6 miles from SE 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 9 |
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 |
|---|---|---|---|---|---|---|---|
| 24 April 2026 Fri |  Patchy rain nearby |
22.4 ° C | 28.3 ° C | 25 ° C | % 75 | 24.5 km/h | 85% |
| 25 April 2026 Sat | Patchy rain nearby |
23.1 ° C | 30.3 ° C | 26.3 ° C | % 73 | 16.2 km/h | 87% |
| 26 April 2026 Sun | Patchy rain nearby |
23.2 ° C | 29.7 ° C | 26.1 ° C | % 74 | 11.2 km/h | 88% |
| 27 April 2026 Mon |  Moderate rain |
23.5 ° C | 29.3 ° C | 26 ° C | % 77 | 11.9 km/h | 78% |
| 28 April 2026 Tue | Moderate rain |
22.6 ° C | 28.2 ° C | 24.8 ° C | % 80 | 15.5 km/h | 73% |
| 29 April 2026 Wed | Moderate rain |
22.8 ° C | 27.4 ° C | 24.8 ° C | % 81 | 7.6 km/h | 84% |
| 30 April 2026 Thu |  Partly Cloudy |
23.3 ° C | 28.9 ° C | 25.9 ° C | % 77 | 23 km/h | 0% |
| 01 May 2026 Fri | Patchy rain nearby |
24.6 ° C | 29.1 ° C | 26.4 ° C | % 77 | 24.1 km/h | 80% |
| 02 May 2026 Sat | Patchy rain nearby |
24.1 ° C | 29.2 ° C | 26.1 ° C | % 77 | 25.2 km/h | 85% |
| 03 May 2026 Sun | Sunny |
23.4 ° C | 29.3 ° C | 26.1 ° C | % 75 | 23.4 km/h | 0% |
| 04 May 2026 Mon | Patchy rain nearby |
23.8 ° C | 29.8 ° C | 26.5 ° C | % 75 | 22.7 km/h | 76% |
| 05 May 2026 Tue | Patchy rain nearby |
24.7 ° C | 29.8 ° C | 26.7 ° C | % 75 | 22.3 km/h | 85% |
| 06 May 2026 Wed | Partly Cloudy |
23.9 ° C | 29.9 ° C | 26.4 ° C | % 74 | 21.6 km/h | 0% |
| 07 May 2026 Thu | Sunny |
22.8 ° C | 29.9 ° C | 26.2 ° C | % 74 | 25.2 km/h | 0% |
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