| National Weather Service Forecast for:
Islip NY Issued by: National Weather Service New York, NY |
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| Updated: 12:00 pm EDT May 26, 2026 | ||||||||||||||||||
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| This Afternoon |
Mostly sunny, with a high near 75. Northeast wind 5 to 7 mph becoming south. |
| Tonight |
Increasing clouds, with a low around 59. Southwest wind around 5 mph. |
| Wednesday |
Mostly cloudy, with a high near 74. Southwest wind 5 to 9 mph. |
| Wednesday Night |
A 20 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 62. Southwest wind around 6 mph becoming northwest after midnight. |
| Thursday |
Mostly sunny, with a high near 77. Northwest wind 7 to 13 mph. |
| Thursday Night |
Mostly clear, with a low around 56. |
| Friday |
Mostly sunny, with a high near 72. |
| Friday Night |
Partly cloudy, with a low around 55. |
| Saturday |
Mostly sunny, with a high near 68. |
| Saturday Night |
Partly cloudy, with a low around 53. |
| Sunday |
Mostly sunny, with a high near 70. |
| Sunday Night |
Partly cloudy, with a low around 55. |
| Monday |
Mostly sunny, with a high near 71. |
Forecast from NOAA-NWS for Islip NY.
