Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

25°C

77°F

Humidity 35%
Wind Speed NW 30 G 46 km/h
Barometer 1015.5 mb (29.99 in)
Dewpoint 8°C (47°F)
Visibility 16 km
Heat Index26°C (78°F)
Last update 15 Jun 12:56 pm EDT
Extended Forecast for

Holtsville NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 27. North wind 21 to 23 km/h.

    High: 27 °C

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 14. Northeast wind 10 to 13 km/h.

    Low: 14 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 24. Northeast wind 8 to 13 km/h becoming southeast in the afternoon.

    High: 24 °C

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16. South wind 8 to 11 km/h.

    Low: 16 °C

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 28. South wind 10 to 15 km/h increasing to 16 to 21 km/h in the afternoon.

    High: 28 °C

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19.

    Low: 19 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 30.

    High: 30 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20.

    Low: 20 °C

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 31.

    High: 31 °C

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 27. North wind 21 to 23 km/h.
Tonight
Mostly clear, with a low around 14. Northeast wind 10 to 13 km/h.
Sunday
Sunny, with a high near 24. Northeast wind 8 to 13 km/h becoming southeast in the afternoon.
Sunday Night
Partly cloudy, with a low around 16. South wind 8 to 11 km/h.
Monday
Mostly sunny, with a high near 28. South wind 10 to 15 km/h increasing to 16 to 21 km/h in the afternoon.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Sunny, with a high near 30.
Tuesday Night
Mostly clear, with a low around 20.
Juneteenth
Sunny, with a high near 31.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
Sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 32.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
Holtsville NY
 40.82°N 73.05°W (Elev. 112 m)
10:59 am EDT Jun 15, 2024
1pm EDT Jun 15, 2024-6pm EDT Jun 21, 2024
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database