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Islip, NY 11751 Weather

Tonight: Mostly Clear, low 50°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

Islip, NY 11751 current weather

52°F

Partly Cloudy

Forecast for this hour. No recent report from a nearby station.

H -- / L 50°

No recent station report. NWS hourly forecast updated 10/28/2026, 2:28 PM PT

Hourly forecast

NWS, updated 10/28/2026, 2:28 PM PT

  1. Now52°
  2. 10 PM52°
  3. 11 PM53°
  4. 12 AM53°Thu
  5. 1 AM53°
  6. 2 AM53°
  7. 3 AM52°
  8. 4 AM51°
  9. 5 AM51°
  10. 6 AM51°
  11. 7 AM50°
  12. 8 AM51°
  13. 9 AM55°
  14. 10 AM60°
  15. 11 AM63°
  16. 12 PM64°
  17. 1 PM65°
  18. 2 PM65°
  19. 3 PM65°
  20. 4 PM66°
  21. 5 PM64°
  22. 6 PM62°
  23. 7 PM60°
  24. 8 PM57°
  25. 9 PM57°
  26. 10 PM57°
  27. 11 PM56°
  28. 12 AM56°Fri
  29. 1 AM55°
  30. 2 AM55°
  31. 3 AM55°
  32. 4 AM55°
  33. 5 AM55°
  34. 6 AM55°
  35. 7 AM55°
  36. 8 AM55°
  37. 9 AM58°
  38. 10 AM63°
  39. 11 AM67°
  40. 12 PM69°
  41. 1 PM70°
  42. 2 PM70°
  43. 3 PM70°
  44. 4 PM69°
  45. 5 PM67°
  46. 6 PM63°
  47. 7 PM59°
  48. 8 PM55°

10-day forecast

Tap a day for details

  • Today10/28Low 50°High

    Tonight: Mostly clear, with a low around 50. South wind around 3 mph.

    Mostly Clear
  • Thu10/29Low 55°High 66°

    Thursday: Sunny. High near 66, with temperatures falling to around 64 in the afternoon. Southwest wind 2 to 10 mph.

    Thursday Night: Mostly clear, with a low around 55. Southwest wind around 9 mph.

    Sunny
  • Fri10/30Low 43°High 70°

    Friday: Sunny. High near 70, with temperatures falling to around 67 in the afternoon. West wind 8 to 13 mph.

    Friday Night: Mostly clear, with a low around 43. Northwest wind 7 to 12 mph.

    Sunny
  • Sat10/31Low 41°High 60°

    Saturday: Sunny. High near 60, with temperatures falling to around 58 in the afternoon.

    Saturday Night: Partly cloudy, with a low around 41.

    Sunny
  • Sun11/1Low 48°High 62°

    Sunday: Partly sunny, with a high near 62.

    Sunday Night: Partly cloudy, with a low around 48.

    Partly Sunny
  • Mon11/2Low 50°High 64°

    Monday: Mostly sunny, with a high near 64.

    Monday Night: Mostly cloudy, with a low around 50.

    Mostly Sunny
  • Tue11/311% chance of precipitationLow 50°High 64°

    Tuesday: Partly sunny, with a high near 64.

    Tuesday Night: Mostly cloudy, with a low around 50.

    Partly Sunny
  • Wed11/412% chance of precipitationLow High 64°

    Wednesday: Mostly sunny, with a high near 64.

    Mostly Sunny
  • Thu11/5Model blend54% chance of precipitationLow 53°High 66°

    Thursday: Chance of rain. High near 66°. Low that night near 53°. About 0.85 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend43% chance of precipitationLow 48°High 65°

    Friday: Chance of rain. High near 65°. Low that night near 48°. About 0.35 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 40.728, -73.214 from the NWS OKX office, updated 10/28/2026, 2:28 PM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KISP (Islip/Macarthur Arpt, 7 mi), model run 10/28/2026, 4:00 PM EDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now52°Partly Cloudy1%3 mph
  2. 10 PM52°Partly Cloudy1%3 mph
  3. 11 PM53°Partly Cloudy1%3 mph
  4. 12 AM53°Partly Cloudy1%3 mph
  5. 1 AM53°Mostly Clear1%2 mph
  6. 2 AM53°Mostly Clear0%2 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

Will it rain in Islip, NY 11751 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Islip, NY 11751?
The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 5 to Nov 6) come from the NOAA National Blend of Models, with highs of 65°F to 66°F and up to a 54% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Islip, NY 11751 today?
Sunrise is about 7:18 AM EDT and sunset is about 5:54 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Islip, NY 11751?
At Molloy Cercom, the 1991 to 2020 normal high in October is 63°F and the normal low is 50°F.

Nearby hazards

New York hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

Drought

By county

Suffolk County, week of 10/20/2026

23% of the county is abnormally dry. No drought.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:18 AM
Sunset
5:54 PM
Daylight
10 hr 35 min
Moon
Waning Gibbous 91% lit
First light (civil dawn)
6:50 AM
Last light (civil dusk)
6:22 PM
Moonrise
7:16 PM
Moonset
10:21 AM

Normal October weather

Climate

Normal October high 63°, low 50°, precipitation 3.56 in for the month. 1991 to 2020 normals at Molloy Cercom, 6 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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