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Heavy Rainfall Possible Over Portions of the Gulf Coast and Southeast

Unsettled weather will continue across the Southeast and Gulf Coast with periodic showers and thunderstorms through at least Wednesday. Rainfall amounts may exceed three inches in some locales. Elsewhere, a few severe thunderstorms are possible for the Ohio Valley and central Plains through Tuesday. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

13°C

55°F

Humidity 80%
Wind Speed Calm
Barometer 1021.3 mb (30.16 in)
Dewpoint 9°C (49°F)
Visibility 16 km
Last update 22 May 1:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 12. Calm wind.

    Mostly Cloudy

    Low: 12 °C

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm, mainly after noon.  Cloudy, with a high near 19. Southeast wind 5 to 13 km/h.  Chance of precipitation is 70%. New rainfall amounts between 2.5 and 5 mm possible.

    Cloudy then
    Showers
    Likely

    High: 19 °C

  • Tuesday
    Night

    Tuesday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers.  Cloudy, with a low around 14. Southeast wind 5 to 11 km/h becoming southwest after midnight.  Chance of precipitation is 60%. New precipitation amounts between 2.5 and 5 mm possible.

    Showers
    Likely

    Low: 14 °C

  • Wednesday

    Wednesday: A 20 percent chance of showers before 11am.  Partly sunny, with a high near 25. West wind 8 to 14 km/h.

    Slight Chance
    Showers then
    Mostly Sunny

    High: 25 °C

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 14. Northwest wind around 10 km/h.

    Mostly Clear

    Low: 14 °C

  • Thursday

    Thursday: Sunny, with a high near 22.

    Sunny

    High: 22 °C

  • Thursday
    Night

    Thursday Night: Clear, with a low around 14.

    Clear

    Low: 14 °C

  • Friday

    Friday: Sunny, with a high near 26.

    Sunny

    High: 26 °C

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 16.

    Partly Cloudy

    Low: 16 °C

Detailed Forecast

Overnight
Mostly cloudy, with a low around 12. Calm wind.
Tuesday
Showers likely and possibly a thunderstorm, mainly after noon. Cloudy, with a high near 19. Southeast wind 5 to 13 km/h. Chance of precipitation is 70%. New rainfall amounts between 2.5 and 5 mm possible.
Tuesday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Cloudy, with a low around 14. Southeast wind 5 to 11 km/h becoming southwest after midnight. Chance of precipitation is 60%. New precipitation amounts between 2.5 and 5 mm possible.
Wednesday
A 20 percent chance of showers before 11am. Partly sunny, with a high near 25. West wind 8 to 14 km/h.
Wednesday Night
Mostly clear, with a low around 14. Northwest wind around 10 km/h.
Thursday
Sunny, with a high near 22.
Thursday Night
Clear, with a low around 14.
Friday
Sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 16.
Saturday
Mostly sunny, with a high near 26.
Saturday Night
Mostly cloudy, with a low around 16.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 22.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 14.
Memorial Day
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 21.
Click Map For Forecast
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.81°N 73.11°W (Elev. 30 m)
7:52 pm EDT May 21, 2018
2am EDT May 22, 2018-6pm EDT May 28, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database