


Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Rain Fog/Mist
9°C
48°F
Humidity | 93% |
Wind Speed | E 20 km/h |
Barometer | 1011.1 mb (29.86 in) |
Dewpoint | 8°C (46°F) |
Visibility | 10 km |
Wind Chill | 6°C (43°F) |
Last update | 22 May 3:56 am EDT |
Extended Forecast for
Great River NY
Coastal Flood Advisory May 22, 02:00pm until May 22, 11:00pm
Overnight
Low: 9 °C
Rain and
BreezyThursday
High: 11 °C
Rain and
BreezyThursday Night
Low: 8 °C
Rain Likely
Friday
High: 15 °C
Chance
ShowersFriday Night
Low: 10 °C
Chance
ShowersSaturday
High: 18 °C
Mostly Sunny
Saturday Night
Low: 11 °C
Partly Cloudy
Sunday
High: 19 °C
Mostly Sunny
Sunday Night
Low: 11 °C
Partly Cloudy
Detailed Forecast
Overnight
Rain. Low around 9. Breezy, with an east wind 29 to 32 km/h. Chance of precipitation is 100%. New precipitation amounts between 5 and 7.5 mm possible.
Thursday
Rain. Steady temperature around 11. Breezy, with a northeast wind 32 to 34 km/h, with gusts as high as 55 km/h. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 cm possible.
Thursday Night
Rain likely before 7pm, then showers likely, mainly between 7pm and 2am. Cloudy, with a low around 8. North wind 19 to 24 km/h decreasing to 13 to 18 km/h after midnight. Winds could gust as high as 40 km/h. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 15. West wind 10 to 16 km/h.
Friday Night
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 10. West wind 13 to 16 km/h.
Saturday
Mostly sunny, with a high near 18.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 19.
Sunday Night
Partly cloudy, with a low around 11.
Memorial Day
Mostly sunny, with a high near 20.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 13.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 18.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 12.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 18.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Great River NY
40.72°N 73.16°W (Elev. 13 m)
40.72°N 73.16°W (Elev. 13 m)
3:21 am EDT May 22, 2025
4am EDT May 22, 2025-6pm EDT May 28, 2025