| NWS Forecast for: Islip, Long Island Mac Arthur Airport NY Issued by: National Weather Service New York, NY Last Update: 10:17 am EDT Apr 14, 2026 |  |
| Today: Mostly sunny, with a temperature falling to around 70 by 5pm. South wind 5 to 10 mph. Tonight: Partly cloudy, with a low around 54. Southwest wind 3 to 8 mph. Wednesday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 79. Light southwest wind becoming south 5 to 10 mph in the morning. Wednesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 53. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. Thursday: Partly sunny, with a high near 73. Light southwest wind becoming south 5 to 9 mph in the morning. Thursday Night: Mostly cloudy, with a low around 54. Friday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 70. Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 48. Saturday: Partly sunny, with a high near 60. Saturday Night: Mostly cloudy, with a low around 47. Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 61. Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 43. Monday: Mostly sunny, with a high near 54. | |
| Islip, Long Island Mac Arthur Airport NY 40.78°N 73.09°W (Elev. 49 ft) | |
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