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Fall 2026 Frost/Freeze Program

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

57°F

14°C

Humidity	67%
Wind Speed	S 3 mph
Barometer	30.17 in (1021.7 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	15 Oct 10:56 pm EDT

More Information:

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

Extended Forecast for

West Sayville NY

Tonight
Low: 53 °F⇑
Chance
Showers
Friday
High: 71 °F
Showers then
Chance
Showers
Friday Night
Low: 44 °F
Showers then
Showers
Likely
Saturday
High: 54 °F
Decreasing
Clouds
Saturday Night
Low: 40 °F
Mostly Clear
Sunday
High: 57 °F
Sunny
Sunday Night
Low: 45 °F
Mostly Clear
Monday
High: 61 °F
Sunny
Monday Night
Low: 48 °F
Partly Cloudy

Detailed Forecast

Tonight

A 30 percent chance of showers after 5am. Increasing clouds, with a temperature rising to around 57 by 5am. Southeast wind 6 to 9 mph.

Friday

Showers, with thunderstorms also possible after 2pm. High near 71. Southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms, then showers after 8pm. Low around 44. Southwest wind 9 to 14 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Cloudy, then gradually becoming mostly sunny, with a high near 54. North wind 16 to 18 mph, with gusts as high as 29 mph.

Saturday Night

Mostly clear, with a low around 40. North wind 10 to 14 mph.

Sunday

Sunny, with a high near 57.

Sunday Night

Mostly clear, with a low around 45.

Monday

Sunny, with a high near 61.

Monday Night

Partly cloudy, with a low around 48.