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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

N/A

Humidity	NA
Wind Speed	W 7 mph
Barometer	29.77 in
Dewpoint	N/A
Visibility	9.00 mi
Last update	11 Jan 4:56 am EST

More Information:

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

Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Overnight
Low: 42 °F
Chance Rain
and Patchy
Fog
Sunday
High: 46 °F
Chance Rain
and Patchy
Fog then
Chance
Rain/Snow
Sunday Night
Low: 28 °F
Breezy.
Chance
Rain/Snow
then Mostly
Clear
Monday
High: 40 °F
Sunny
Monday Night
Low: 31 °F
Partly Cloudy
Tuesday
High: 44 °F
Sunny
Tuesday Night
Low: 37 °F
Mostly Cloudy
Wednesday
High: 46 °F
Cloudy
Wednesday Night
Low: 30 °F
Cloudy then
Chance Rain

Detailed Forecast

Overnight

A 40 percent chance of rain. Patchy fog. Otherwise, cloudy, with a low around 42. West wind around 6 mph.

Sunday

A chance of rain before 10am, then a chance of rain and snow showers after 4pm. Patchy fog before 7am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 46. West wind 6 to 14 mph. Chance of precipitation is 50%.

Sunday Night

A chance of rain and snow showers before 7pm, then a slight chance of snow showers between 7pm and 10pm. Mostly clear, with a low around 28. Wind chill values between 20 and 25. Breezy, with a west wind 15 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.

Monday

Sunny, with a high near 40. Wind chill values between 20 and 30. West wind 10 to 14 mph, with gusts as high as 26 mph.

Monday Night

Partly cloudy, with a low around 31. Southwest wind 7 to 9 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 after 1am. Mostly cloudy, with a low around 30.