Long Island MacArthur Airport (ISP) 15 Day Weather Forecast, Islip United States
Current weather conditions and 15 day weather forecast for Long Island MacArthur Airport in Islip, United States 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 ISP
| 05 December 2025 Fri -5.6 ° C ( 21.9°F )  Clear |
Feels Like : -12.1 ° C / 10.1°F Humidity : % 39 Pressure : 1027 mb Wind Speed : 19.1 kmph / 11.9 miles from N 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Long Island MacArthur Airport, Islip, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 05 December 2025 Fri |  Partly Cloudy |
-7.7 ° C | -0.8 ° C | -3.5 ° C | % 64 | 23.8 km/h | 0% |
| 06 December 2025 Sat |  Fog |
-0.6 ° C | 2.3 ° C | 0.9 ° C | % 96 | 15.1 km/h | 0% |
| 07 December 2025 Sun |  Overcast |
-0.7 ° C | 2.6 ° C | 1.5 ° C | % 80 | 14.4 km/h | 0% |
| 08 December 2025 Mon |  Moderate or heavy snow showers |
-3.8 ° C | 3.9 ° C | 0.3 ° C | % 64 | 40.7 km/h | 88% |
| 09 December 2025 Tue | Partly Cloudy |
-4 ° C | 1.3 ° C | -2 ° C | % 42 | 27 km/h | 0% |
| 10 December 2025 Wed |  Moderate rain |
4.7 ° C | 11.3 ° C | 7.6 ° C | % 80 | 33.8 km/h | 83% |
| 11 December 2025 Thu |  Patchy rain nearby |
0.2 ° C | 7.6 ° C | 5.6 ° C | % 72 | 31.7 km/h | 78% |
| 12 December 2025 Fri | Overcast |
-0.5 ° C | 1.5 ° C | 0.4 ° C | % 54 | 22 km/h | 0% |
| 13 December 2025 Sat | Sunny |
-0 ° C | 2.7 ° C | 1.1 ° C | % 57 | 24.1 km/h | 0% |
| 14 December 2025 Sun | Sunny |
0.1 ° C | 5.1 ° C | 2.9 ° C | % 56 | 30.6 km/h | 0% |
| 15 December 2025 Mon | Sunny |
-0.4 ° C | 5.2 ° C | 3 ° C | % 53 | 35.6 km/h | 0% |
| 16 December 2025 Tue | Sunny |
-1.7 ° C | 0.5 ° C | -0.6 ° C | % 48 | 32 km/h | 0% |
| 17 December 2025 Wed | Moderate or heavy snow showers |
-0.6 ° C | 1.4 ° C | 0.4 ° C | % 62 | 16.9 km/h | 88% |
| 18 December 2025 Thu | Moderate rain |
0.7 ° C | 1.9 ° C | 1.6 ° C | % 98 | 28.4 km/h | 88% |
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