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

Updated: 5:35 am EDT Apr 01, 2025

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Stony Brook, NY

Tuesday Chance Light Rain then Mostly Sunny Wednesday Mostly Sunny Thursday Areas Of Fog Friday Chance Rain Showers Saturday Rain Showers Likely Sunday Rain Showers Likely Monday Chance Rain Showers   Hi 53 °F Hi 48 °F Hi 64 °F Hi 62 °F Hi 52 °F Hi 58 °F Hi 57 °F   Overnight Chance Light Rain Tuesday Night Mostly Clear Wednesday Night Cloudy then Chance Rain Showers Thursday Night Chance Rain Showers Friday Night Mostly Cloudy Saturday Night Rain Showers Likely Sunday Night Chance Rain Showers   Lo 43 °F Lo 30 °F Lo 39 °F Lo 50 °F Lo 43 °F Lo 42 °F Lo 43 °F

 

Overnight	A chance of rain. Cloudy, with a low around 43. North wind around 13 mph. Chance of precipitation is 40%.
Tuesday	A chance of rain before 8am. Mostly sunny, with a high near 53. Northwest wind 13 to 17 mph. Chance of precipitation is 30%.
Tuesday Night	Mostly clear, with a low around 30. Wind chill values as low as 22. North wind around 12 mph.
Wednesday	Mostly sunny, with a high near 48. Wind chill values as low as 21. East wind around 12 mph.
Wednesday Night	A chance of rain showers between 2am and 3am, then areas of fog and a chance of rain showers. Cloudy, with a low around 39. Southeast wind around 13 mph. Chance of precipitation is 30%.
Thursday	Areas of fog and a chance of rain showers before 2pm. Cloudy, with a high near 64. Chance of precipitation is 30%.
Thursday Night	A chance of rain showers after 8pm. Cloudy, with a low around 50. Chance of precipitation is 50%.
Friday	A chance of rain showers before 2pm. Mostly cloudy, with a high near 62. Chance of precipitation is 40%.
Friday Night	Mostly cloudy, with a low around 43.
Saturday	Rain showers likely after 8am. Mostly cloudy, with a high near 52. Chance of precipitation is 70%.
Saturday Night	Rain showers likely. Cloudy, with a low around 42. Chance of precipitation is 70%.
Sunday	Rain showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Sunday Night	A chance of rain showers. Mostly cloudy, with a low around 43. Chance of precipitation is 50%.
Monday	A chance of rain showers. Partly sunny, with a high near 57. Chance of precipitation is 50%.

 

Forecast from NOAA-NWS for Stony Brook, NY.

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