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Climate Reports Summary for 2025

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain Fog/Mist

47°F

8°C

Humidity	97%
Wind Speed	E 12 mph
Barometer	29.80 in (1009.2 mb)
Dewpoint	46°F (8°C)
Visibility	6.00 mi
Wind Chill	42°F (6°C)
Last update	10 Jan 9:56 pm EST

More Information:

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

Extended Forecast for

Nissequogue NY

Tonight
Low: 40 °F
Rain Likely
and Patchy
Fog
Sunday
High: 45 °F
Chance Rain
then Chance
Snow Showers
Sunday Night
Low: 29 °F
Breezy.
Chance Snow
Showers then
Partly Cloudy
Monday
High: 40 °F
Mostly Sunny
Monday Night
Low: 31 °F
Mostly Clear
Tuesday
High: 44 °F
Sunny
Tuesday Night
Low: 37 °F
Mostly Cloudy
Wednesday
High: 46 °F
Cloudy
Wednesday Night
Low: 29 °F
Chance Rain

Detailed Forecast

Tonight

Rain likely, mainly before 4am. Patchy fog after 1am. Otherwise, cloudy, with a low around 40. East wind 5 to 11 mph becoming west after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday

A chance of rain before 10am, then a chance of snow showers after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

Sunday Night

A 30 percent chance of snow showers, mainly before 7pm. Partly cloudy, with a low around 29. Wind chill values between 15 and 25. Breezy, with a west wind 20 to 25 mph.

Monday

Mostly sunny, with a high near 40. Wind chill values between 15 and 25. West wind 10 to 16 mph, with gusts as high as 26 mph.

Monday Night

Mostly clear, with a low around 31. Southwest wind around 10 mph.

Tuesday

Sunny, with a high near 44.

Tuesday Night

Mostly cloudy, with a low around 37.

Wednesday

Cloudy, with a high near 46.

Wednesday Night

A 30 percent chance of rain. Mostly cloudy, with a low around 29.