National Weather Service Forecast for: Oyster Bay NY
Issued by: National Weather Service New York, NY
Updated: 7:08 am EDT Jun 22, 2026
 
Today

Today: Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 75. East wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Slight Chance
Showers then
Showers
Likely
 Tonight

Tonight: Showers and possibly a thunderstorm. Low around 66. South wind 9 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Tuesday

Tuesday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers. Mostly cloudy, with a high near 76. Southwest wind 7 to 10 mph becoming north in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 63. Northwest wind around 10 mph.
Partly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 82. Northwest wind 6 to 8 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 64.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 82.
Mostly Sunny

 Thursday
Night
Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Showers
Likely

 Friday

Friday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Showers
Likely then
Chance
T-storms
Hi 75 °F Lo 66 °F Hi 76 °F Lo 63 °F Hi 82 °F Lo 64 °F Hi 82 °F Lo 66 °F Hi 79 °F

 

Today
 
 Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 75. East wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 Showers and possibly a thunderstorm. Low around 66. South wind 9 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
 Showers likely and possibly a thunderstorm before 2pm, then a chance of showers. Mostly cloudy, with a high near 76. Southwest wind 7 to 10 mph becoming north in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
 
 Partly cloudy, with a low around 63. Northwest wind around 10 mph.
Wednesday
 
 Sunny, with a high near 82. Northwest wind 6 to 8 mph.
Wednesday Night
 
 Mostly clear, with a low around 64.
Thursday
 
 Mostly sunny, with a high near 82.
Thursday Night
 
 A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Friday
 
 Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
 
 Mostly sunny, with a high near 79.
Saturday Night
 
 Partly cloudy, with a low around 67.
Sunday
 
 Mostly sunny, with a high near 80.

 

Forecast from NOAA-NWS for Oyster Bay NY.