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
| 11 January 2026 Sun 5.6 ° C ( 42.1°F )  Mist |
Feels Like : 3.2 ° C / 37.8°F Humidity : % 96 Pressure : 1008 mb Wind Speed : 10.8 kmph / 6.7 miles from NNW 
Visibility : 4 km Precipitation (rainfall) : 0.04 mm Cloud (%) : 100 |
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 |
|---|---|---|---|---|---|---|---|
| 11 January 2026 Sun |  Moderate rain |
1.2 ° C | 9.5 ° C | 5.8 ° C | % 81 | 29.9 km/h | 89% |
| 12 January 2026 Mon |  Partly Cloudy |
-2.1 ° C | 5.3 ° C | 1.2 ° C | % 68 | 36 km/h | 0% |
| 13 January 2026 Tue |  Sunny |
-1 ° C | 4.6 ° C | 2.2 ° C | % 76 | 29.9 km/h | 0% |
| 14 January 2026 Wed |  Patchy rain nearby |
5.9 ° C | 6.9 ° C | 6.4 ° C | % 75 | 33.8 km/h | 65% |
| 15 January 2026 Thu | Patchy rain nearby |
4.3 ° C | 7.1 ° C | 5.8 ° C | % 87 | 38.5 km/h | 77% |
| 16 January 2026 Fri |  Blizzard |
-5.1 ° C | -2.2 ° C | -2.9 ° C | % 87 | 44.6 km/h | 56% |
| 17 January 2026 Sat |  Moderate snow |
-5.5 ° C | 1 ° C | -1.8 ° C | % 79 | 25.6 km/h | 61% |
| 18 January 2026 Sun |  Light freezing rain |
-1 ° C | 1.6 ° C | 0.8 ° C | % 79 | 38.2 km/h | 71% |
| 19 January 2026 Mon | Light freezing rain |
-5.6 ° C | -4.6 ° C | -4 ° C | % 64 | 40.3 km/h | 80% |
| 20 January 2026 Tue |  Overcast |
-10.3 ° C | -7.6 ° C | -7.7 ° C | % 67 | 19.4 km/h | 0% |
| 21 January 2026 Wed | Sunny |
-11.4 ° C | -5.9 ° C | -8.3 ° C | % 65 | 25.9 km/h | 0% |
| 22 January 2026 Thu | Sunny |
-4.2 ° C | 1.7 ° C | -0.9 ° C | % 62 | 32.8 km/h | 0% |
| 23 January 2026 Fri | Moderate rain |
0.7 ° C | 2.6 ° C | 2.7 ° C | % 86 | 30.6 km/h | 88% |
| 24 January 2026 Sat | Patchy rain nearby |
2.4 ° C | 3.9 ° C | 3.6 ° C | % 95 | 29.2 km/h | 85% |
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