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Flooding Threat Thursday Afternoon into Thursday Night
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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

82°F

28°C

Humidity	82%
Wind Speed	SW 8 mph
Barometer	29.96 in (1014.5 mb)
Dewpoint	76°F (24°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	30 Jul 11:56 pm EDT

More Information:

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

Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Flood Watch July 31, 02:00pm until August 1, 02:00pm

Click here for hazard details and duration

Flood Watch

Overnight
Low: 75 °F
Partly Cloudy
Thursday
High: 83 °F
Heavy Rain
Thursday Night
Low: 64 °F
Heavy Rain
Friday
High: 70 °F
Showers
Likely
Friday Night
Low: 62 °F
Chance
Showers
Saturday
High: 80 °F
Sunny
Saturday Night
Low: 64 °F
Mostly Clear
Sunday
High: 82 °F
Sunny
Sunday Night
Low: 66 °F
Partly Cloudy

Detailed Forecast

Overnight

Partly cloudy, with a low around 75. West wind around 6 mph.

Thursday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 83. East wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 64. East wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Friday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Northeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

A 30 percent chance of showers before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Northeast wind 11 to 13 mph, with gusts as high as 23 mph.

Saturday

Sunny, with a high near 80.

Saturday Night

Mostly clear, with a low around 64.

Sunday

Sunny, with a high near 82.

Sunday Night

Partly cloudy, with a low around 66.

Monday

Mostly sunny, with a high near 84.

Monday Night

Partly cloudy, with a low around 67.