Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
N/A
| Humidity | NA |
| Wind Speed | W 7 mph |
| Barometer | 30.07 in |
| Dewpoint | N/A |
| Visibility | 10.00 mi |
| Last update | 13 Jan 4:56 am EST |
Extended Forecast for
West Sayville NY
Today

High: 45 °F
Increasing
CloudsTonight
Low: 41 °F
Mostly Cloudy
then Slight
Chance
ShowersWednesday

High: 47 °F
Cloudy
Wednesday Night

Low: 29 °F
Chance Rain
Thursday
High: 39 °F⇓
Slight Chance
Rain/Snow
then Slight
Chance SnowThursday Night

Low: 17 °F
Mostly Clear
Friday

High: 36 °F
Mostly Sunny
Friday Night

Low: 27 °F
Mostly Cloudy
Saturday

High: 41 °F
Partly Sunny
Detailed Forecast
Today
Increasing clouds, with a high near 45. Wind chill values between 25 and 35 early. West wind 10 to 13 mph.
Tonight
A 20 percent chance of showers after 1am. Mostly cloudy, with a steady temperature around 41. Southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Wednesday
Cloudy, with a high near 47. Southwest wind 6 to 9 mph.
Wednesday Night
A 40 percent chance of rain. Cloudy, with a low around 29. Calm wind becoming west around 6 mph after midnight.
Thursday
A slight chance of rain before 10am, then a slight chance of snow between 10am and 1pm. Partly sunny, with a temperature falling to around 29 by 5pm. West wind 8 to 14 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 17.
Friday
Mostly sunny, with a high near 36.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 38.
Sunday Night
Mostly cloudy, with a low around 22.
M.L.King Day
Partly sunny, with a high near 33.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
West Sayville NY
40.74°N 73.1°W (Elev. 30 ft)
40.74°N 73.1°W (Elev. 30 ft)
1:18 am EST Jan 13, 2026
5am EST Jan 13, 2026-6pm EST Jan 19, 2026


