School of Marine and Atmospheric Sciences Real Time Data Systems

National Weather Service Forecast for: Stony Brook, NY
Issued by: National Weather Service New York/Upton, NY

Updated: 6:40 pm EST Jan 21, 2025

Stony Brook, NY

	Wednesday Sunny	Thursday Partly Sunny	Friday Sunny	Saturday Sunny	Sunday Partly Sunny	Monday Slight Chance Snow Showers	Tuesday Mostly Sunny
	Hi 21 °F	Hi 29 °F	Hi 31 °F	Hi 30 °F	Hi 38 °F	Hi 35 °F	Hi 36 °F

Tonight Mostly Cloudy	Wednesday Night Mostly Cloudy	Thursday Night Mostly Clear	Friday Night Partly Cloudy	Saturday Night Mostly Cloudy	Sunday Night Mostly Cloudy then Slight Chance Snow Showers	Monday Night Partly Cloudy
Lo 10 °F	Lo 13 °F	Lo 18 °F	Lo 18 °F	Lo 24 °F	Lo 24 °F	Lo 24 °F

Tonight	Mostly cloudy, with a low around 10. Wind chill values as low as -3. Northwest wind 6 to 13 mph.
Wednesday	Sunny. High near 21, with temperatures falling to around 19 in the afternoon. Wind chill values as low as -3. Northwest wind 5 to 12 mph.
Wednesday Night	Mostly cloudy, with a low around 13. Wind chill values as low as 6. Southwest wind around 6 mph.
Thursday	Partly sunny. High near 29, with temperatures falling to around 27 in the afternoon. Wind chill values as low as 11. Southwest wind 3 to 8 mph.
Thursday Night	Mostly clear. Low around 18, with temperatures rising to around 20 overnight. West wind around 8 mph.
Friday	Sunny. High near 31, with temperatures falling to around 28 in the afternoon.
Friday Night	Partly cloudy, with a low around 18.
Saturday	Sunny, with a high near 30.
Saturday Night	Mostly cloudy, with a low around 24.
Sunday	Partly sunny, with a high near 38.
Sunday Night	A slight chance of snow showers after 1am. Mostly cloudy, with a low around 24.
Monday	A slight chance of snow showers before 1pm. Partly sunny, with a high near 35.
Monday Night	Partly cloudy, with a low around 24.
Tuesday	Mostly sunny, with a high near 36.

Forecast from NOAA-NWS for Stony Brook, NY.