National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Weather and Heavy Rain in Several Spots; Fire Weather in West; Heat Advisories

Severe weather will focus from the Great Lakes into the OH Valley and Appalachians today, also extending back into TX. The main threats will be damaging winds, hail and heavy rain, that could cause flash flooding. Warm temperatures and breezy conditions will produce elevated fire weather threats in NV, spreading into Southwest for Tuesday. Heat advisories continue for parts of TX, FL, GA and SC. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

83°F

28°C

Humidity 33%
Wind Speed S 10 mph
Barometer 29.87 in (1011.2 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 24 Jun 1:56 pm EDT
Extended Forecast for

Islip NY

  • This
    Afternoon

    This Afternoon: Mostly sunny, with a high near 81. Southwest wind around 7 mph.

    Mostly Sunny

    High: 81 °F

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 69. South wind 6 to 8 mph.

    Mostly Cloudy
    then Chance
    Showers

    Low: 69 °F

  • Tuesday

    Tuesday: Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 1pm. High near 78. Southeast wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Showers and
    Patchy Fog

    High: 78 °F

  • Tuesday
    Night

    Tuesday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 20%.

    Slight Chance
    T-storms then
    Slight Chance
    Showers

    Low: 68 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Light and variable wind becoming south around 6 mph in the afternoon.

    Mostly Sunny

    High: 80 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 68.

    Partly Cloudy

    Low: 68 °F

  • Thursday

    Thursday: Partly sunny, with a high near 82.

    Partly Sunny

    High: 82 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 68.

    Partly Cloudy

    Low: 68 °F

  • Friday

    Friday: Mostly sunny, with a high near 83.

    Mostly Sunny

    High: 83 °F

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. Southwest wind around 7 mph.
Tonight
A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 69. South wind 6 to 8 mph.
Tuesday
Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 1pm. High near 78. Southeast wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 80. Light and variable wind becoming south around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Partly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Mostly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 68.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 77.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
Last Update:
12:14 pm EDT Jun 24, 2019
Forecast Valid:
2pm EDT Jun 24, 2019-6pm EDT Jun 30, 2019
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation