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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
36°F
2°C
| Humidity | 52% |
| Wind Speed | NE 8 mph |
| Barometer | 30.48 in (1032.3 mb) |
| Dewpoint | 20°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 30°F (-1°C) |
| Last update | 15 Mar 8:56 am EDT |
Extended Forecast for
West Sayville NY
Today
High: 47 °F
Partly Sunny
Tonight
Low: 40 °F⇑
Slight Chance
Showers then
Showers and
Patchy FogMonday
High: 56 °F
Intermittent
T-storms and
Areas FogMonday Night
Low: 35 °F
Heavy Rain
and BreezyTuesday
High: 38 °F
Chance
Showers then
Mostly SunnyTuesday Night
Low: 25 °F
Partly Cloudy
Wednesday
High: 37 °F
Mostly Sunny
Wednesday Night
Low: 29 °F
Mostly Cloudy
Thursday
High: 44 °F
Partly Sunny
Detailed Forecast
Today
Partly sunny, with a high near 47. Southeast wind 6 to 10 mph.
Tonight
Showers, with thunderstorms also possible after 5am. Patchy fog after 2am. Temperature falling to near 40 by 8pm, then rising to around 47 during the remainder of the night. East wind 7 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Intermittent showers and thunderstorms. Areas of fog before noon. Otherwise, cloudy, with a high near 56. Breezy, with a south wind 16 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 50%.
Monday Night
Periods of showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 35. Breezy, with a south wind 20 to 24 mph becoming west after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a steady temperature around 38. West wind 14 to 16 mph, with gusts as high as 29 mph.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 48.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 48.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
6:56 am EDT Mar 15, 2026
9am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
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