Flooding Concerns in Puerto Rico; Thunderstorms Across the Southeast U.S.

Showers and thunderstorms capable of producing widespread heavy rainfall will be possible across much of Puerto Rico today. Heavy rainfall will likely lead to flash, urban and small stream flooding. Some areas may face life-threatening flooding. In the Southeast U.S., strong to marginally severe thunderstorms will be possible this afternoon. Read More >

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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

9°C

49°F

Humidity	77%
Wind Speed	SE 22 km/h
Barometer	1018.8 mb (30.08 in)
Dewpoint	6°C (42°F)
Visibility	16 km
Wind Chill	7°C (44°F)
Last update	19 Apr 5:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Extended Forecast for

Port Jefferson NY

Tonight

Chance
Showers then
Showers
Likely
Low: 8 °C
Saturday

Showers then
Chance
Showers
High: 17 °C
Saturday
Night

Mostly Clear
Low: 5 °C
Sunday

Mostly Sunny
High: 13 °C
Sunday
Night

Partly Cloudy
Low: 7 °C
Monday

Sunny
High: 14 °C
Monday
Night

Mostly Clear
Low: 4 °C
Tuesday

Sunny
High: 14 °C
Tuesday
Night

Mostly Cloudy
Low: 8 °C

Detailed Forecast

Tonight

Showers likely, mainly after 4am. Mostly cloudy, with a low around 8. South wind 8 to 16 km/h. Chance of precipitation is 60%. New precipitation amounts between 2.5 and 5 mm possible.

Saturday

Showers, mainly before 11am. High near 17. West wind 10 to 16 km/h. Chance of precipitation is 80%. New precipitation amounts between 2.5 and 5 mm possible.

Saturday Night

Mostly clear, with a low around 5. Northwest wind 16 to 23 km/h.

Sunday

Mostly sunny, with a high near 13. West wind 14 to 21 km/h.

Sunday Night

Partly cloudy, with a low around 7. West wind around 14 km/h.

Monday

Sunny, with a high near 14.

Monday Night

Mostly clear, with a low around 4.

Tuesday

Sunny, with a high near 14.