Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
30°F
-1°C
| Humidity | 49% |
| Wind Speed | SW 5 mph |
| Barometer | 30.06 in (1018.1 mb) |
| Dewpoint | 13°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 25°F (-4°C) |
| Last update | 16 Jan 8:56 pm EST |
Extended Forecast for
5 Miles SSE Blue Point NY
Tonight
Low: 34 °F⇑
Partly Cloudy
then Slight
Chance SnowSaturday
High: 43 °F
Chance
Rain/Snow
then Chance
RainSaturday Night
Low: 34 °F
Mostly Cloudy
then Chance
Rain/SnowSunday
High: 35 °F
Rain/Snow
Likely then
Snow LikelySunday Night

Low: 26 °F
Chance Snow
M.L.King Day

High: 34 °F
Sunny and
BreezyMonday Night

Low: 17 °F
Partly Cloudy
and WindyTuesday

High: 22 °F
Mostly Sunny
and BreezyTuesday Night

Low: 18 °F
Mostly Clear
and Breezy
Detailed Forecast
Tonight
A 20 percent chance of snow after 1am. Increasing clouds, with a temperature rising to around 39 by 4am. Wind chill values between 25 and 30. Southwest wind 15 to 17 mph.
Saturday
A chance of rain and snow before 10am, then a chance of rain. Cloudy, with a high near 43. Southwest wind 15 to 17 mph. Chance of precipitation is 50%.
Saturday Night
A slight chance of rain before 7pm, then a chance of rain and snow after 1am. Mostly cloudy, with a low around 34. West wind 7 to 14 mph. Chance of precipitation is 30%.
Sunday
Rain and snow likely, becoming all snow after 10am. Cloudy, with a steady temperature around 35. West wind 8 to 13 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday Night
A 30 percent chance of snow before 1am. Cloudy during the early evening, then gradual clearing, with a low around 26. Northwest wind 14 to 16 mph.
M.L.King Day
Sunny, with a high near 34. Breezy.
Monday Night
Partly cloudy, with a low around 17. Windy.
Tuesday
Mostly sunny, with a high near 22. Breezy.
Tuesday Night
Mostly clear, with a low around 18. Breezy.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly cloudy, with a high near 38.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 26.
Friday
A chance of rain and snow. Partly sunny, with a high near 33. Chance of precipitation is 30%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
5 Miles SSE Blue Point NY
40.68°N 72.99°W (Elev. 0 ft)
40.68°N 72.99°W (Elev. 0 ft)
3:33 pm EST Jan 16, 2026
9pm EST Jan 16, 2026-6pm EST Jan 23, 2026


