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

Updated: 1:58 am EDT Apr 30, 2025

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Stony Brook, NY

Wednesday Mostly Sunny Thursday Mostly Sunny Friday Chance Rain Showers Saturday Showers And T-Storms Likely Sunday Chance Rain Showers Monday Chance Rain Showers Tuesday Chance Rain Showers   Hi 72 °F Hi 65 °F Hi 72 °F Hi 67 °F Hi 66 °F Hi 64 °F Hi 67 °F   Overnight Mostly Cloudy Wednesday Night Mostly Clear Thursday Night Mostly Cloudy then Chance Rain Showers Friday Night Chance Showers And T-Storms Saturday Night Showers And T-Storms Likely Sunday Night Chance Rain Showers Monday Night Chance Rain Showers   Lo 58 °F Lo 47 °F Lo 51 °F Lo 56 °F Lo 51 °F Lo 50 °F Lo 50 °F

Special Weather Statement
 

Overnight	Mostly cloudy. Low around 58, with temperatures rising to around 62 overnight. Southwest wind around 14 mph.
Wednesday	Mostly sunny. High near 72, with temperatures falling to around 69 in the afternoon. Northwest wind 10 to 15 mph.
Wednesday Night	Mostly clear. Low around 47, with temperatures rising to around 49 overnight. North wind 3 to 9 mph.
Thursday	Mostly sunny. High near 65, with temperatures falling to around 61 in the afternoon. East wind 3 to 7 mph.
Thursday Night	A chance of rain showers after 2am. Mostly cloudy. Low around 51, with temperatures rising to around 53 overnight. Southeast wind around 7 mph. Chance of precipitation is 40%.
Friday	A chance of rain showers. Mostly cloudy. High near 72, with temperatures falling to around 68 in the afternoon. Chance of precipitation is 40%.
Friday Night	A slight chance of rain showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers and thunderstorms likely. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Saturday	Showers and thunderstorms likely. Mostly cloudy, with a high near 67. Chance of precipitation is 70%.
Saturday Night	Showers and thunderstorms likely. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Sunday	A chance of rain showers. Mostly sunny, with a high near 66. Chance of precipitation is 40%.
Sunday Night	A chance of rain showers. Partly cloudy, with a low around 50. Chance of precipitation is 30%.
Monday	A chance of rain showers. Mostly sunny, with a high near 64. Chance of precipitation is 30%.
Monday Night	A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Tuesday	A chance of rain showers. Mostly sunny, with a high near 67. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Stony Brook, NY.

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