| NWS Forecast for: Islip NY Issued by: National Weather Service New York, NY Last Update: 3:16 pm EDT Jul 15, 2025 |  |
Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 23. South wind 5 to 10 km/h becoming calm in the evening. Wednesday: Mostly sunny, with a high near 29. Heat index values as high as 35. Light southwest wind becoming south 9 to 14 km/h in the morning. Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Southwest wind 10 to 13 km/h. Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 30. Heat index values as high as 36. Southwest wind 11 to 21 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms. Thursday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 24. Southwest wind 11 to 13 km/h. Chance of precipitation is 60%. Friday: Mostly sunny, with a high near 31. Friday Night: Partly cloudy, with a low around 21. Saturday: Sunny, with a high near 28. Saturday Night: Mostly cloudy, with a low around 21. Sunday: A 40 percent chance of showers after 8am. Partly sunny, with a high near 28. Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 22. Monday: Mostly sunny, with a high near 29. Monday Night: Partly cloudy, with a low around 21. Tuesday: Mostly sunny, with a high near 27. | |
| Islip NY 40.73°N 73.22°W (Elev. 7 m) | |
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