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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

78°F

26°C

Humidity	67%
Wind Speed	SW 15 G 21 mph
Barometer	29.86 in (1011.1 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	2 Oct 3:56 pm EDT

More Information:

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

Extended Forecast for

Great River NY

This Afternoon
High: 77 °F
Slight Chance
Showers
Tonight
Low: 59 °F
Chance
Showers
Saturday
High: 71 °F
Sunny
Saturday Night
Low: 55 °F
Mostly Clear
Sunday
High: 65 °F
Mostly Sunny
then Chance
Showers
Sunday Night
Low: 57 °F
Chance
Showers
Monday
High: 69 °F
Decreasing
Clouds
Monday Night
Low: 50 °F
Mostly Clear
Tuesday
High: 61 °F
Sunny

Detailed Forecast

This Afternoon

A 20 percent chance of showers after 5pm. Mostly sunny, with a steady temperature around 77. Southwest wind 11 to 13 mph.

Tonight

A 50 percent chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 59. West wind around 8 mph becoming north after midnight.

Saturday

Sunny, with a high near 71. North wind around 11 mph.

Saturday Night

Mostly clear, with a low around 55. East wind around 7 mph.

Sunday

A 40 percent chance of showers after 2pm. Increasing clouds, with a high near 65. East wind 11 to 13 mph.

Sunday Night

A 50 percent chance of showers before 2am. Cloudy, with a low around 57.

Monday

Mostly cloudy, then gradually becoming sunny, with a high near 69.

Monday Night

Mostly clear, with a low around 50.