News12 New York
N12 Originals
Numbers & Links
Local
Crime
Weather
Taxing Long Island
Vote 2026: Long Island elections
Mostly Cloudy
56°
Local
Crime
Weather
Taxing Long Island
Vote 2026: Long Island elections

STORM WATCH: Nor'easter to bring coastal flooding, strong winds and heavy rain

Tonight, clouds increase and we’ll be watching the shoreline.

Rich Hoffman

Sep 24, 2026, 8:03 AM

Updated

Share:

More Stories

LI Shoreline Alerts
🌊 LI Shoreline Alerts Checking...
Islip Information

Islip Information

Islip, New York • Climate data: Islip MacArthur Airport (ISP)
Updating...
🌅
Sunrise
--
Islip
🌇
Sunset
--
Islip
☀️
UV Index Today
--
Loading...
🌙
Moon Phase
--
Tonight
🍃
Air Quality
--
Loading...
🌡️
Average High / Low
-- / --
1991-2020 Normals
ISP Climate
🏆
Record High / Low
-- / --
Loading...
ISP Climate
Loading latest Islip information...

We’re tracking a nor’easter that will impact Long Island this weekend, bringing several rounds of rain, strong gusty winds and the potential for coastal flooding. Today is the quiet day. Expect a mixture of sun and clouds, but it will be breezy, with gusts around 30 to 35 mph. High temperatures will range from about 65 to 70 degrees.

NOREASTER-BOARD.png
Long Island Today forecast
COASTALFLOODADV.png

Check local tides and shoreline alerts -> https://longisland.news12.com/long-island-tides

Tonight, clouds increase and we’ll be watching the shoreline. A coastal flood advisory is in effect, with minor coastal flooding around high tide. Otherwise, expect mostly cloudy skies, temperatures in the 60s and wind gusts around 30 to 35 mph.

Long Island tonight forecast

Friday is when the weather begins going downhill. Rain showers develop, especially during the afternoon, while winds increase. Gusts around 30 mph are possible during the morning, increasing to around 40 mph later in the day. Friday night is an important time to watch for coastal flooding, especially along the south shore, where moderate flooding could develop around high tide. Periods of rain will continue with gusty winds.

Saturday brings some of the worst weather from the nor’easter. Rain becomes heavier during the afternoon, with pockets of moderate to heavy rain and even the chance of a thunderstorm. Winds could gust 35 to 45 mph. Saturday night remains stormy with heavy downpours, strong winds and another coastal flooding threat. Gusts could reach 35 to 55 mph, with the strongest winds across the East End.

STORMNASSAU.png
STORMSUFFOLK.png
STORMEastEnd.png

Sunday starts wet and windy, with periods of rain that could still be heavy during the morning. The rain should gradually taper during the afternoon, but winds could continue gusting 35 to 45 mph, with isolated gusts near 55 mph across the East End. The main concerns this weekend will be heavy rain, strong winds and coastal flooding, so stay weather aware and keep checking the forecast as the storm approaches. Conditions should finally begin improving Sunday night and into Monday.

li10day.png

More From News12

App StoreGoogle Play Store

info

Newsletter

Send Photos/Videos

Contact

About Us

News Team

News 12 New York

follow us

Twitter

Facebook

Instagram

more resources

Optimum Corporate

Optimum Service

Advertise on News 12

Careers

Content Removal Policy

© 2026 N12N, LLC

Privacy Policy

Terms of Service

Ad Choices