National Weather Service

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

21°C

69°F

Humidity	81%
Wind Speed	SW 19 km/h
Barometer	1014.3 mb (29.95 in)
Dewpoint	17°C (63°F)
Visibility	16 km
Last update	14 Jun 12:56 am EDT

More Information:

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

Extended Forecast for

Stony Brook NY

Overnight
Low: 19 °C
Partly Cloudy
Friday
High: 28 °C
Slight Chance
Showers then
Heavy Rain
Friday Night
Low: 18 °C
Heavy Rain
then Showers
Saturday
High: 27 °C
Sunny
Saturday Night
Low: 15 °C
Mostly Clear
Sunday
High: 26 °C
Sunny
Sunday Night
Low: 17 °C
Partly Cloudy
Monday
High: 27 °C
Mostly Sunny
Monday Night
Low: 19 °C
Partly Cloudy

Detailed Forecast

Overnight

Partly cloudy, with a low around 19. Southwest wind 13 to 16 km/h.

Friday

A slight chance of showers, then showers and thunderstorms likely after 2pm. Some of the storms could produce heavy rainfall. Mostly cloudy, then gradually becoming sunny, with a high near 28. South wind 14 to 23 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

Friday Night

Showers and thunderstorms, mainly before 2am. Some of the storms could produce heavy rainfall. Low around 18. Southeast wind 8 to 13 km/h becoming northwest after midnight. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 cm possible.

Saturday

Sunny, with a high near 27. North wind around 16 km/h.

Saturday Night

Mostly clear, with a low around 15. North wind 13 to 16 km/h.

Sunday

Sunny, with a high near 26.

Sunday Night

Partly cloudy, with a low around 17.

Monday

Mostly sunny, with a high near 27.

Monday Night

Partly cloudy, with a low around 19.