NWS Forecast for Oyster Bay NY

National Weather Service Forecast for: Oyster Bay NY
Issued by: National Weather Service New York, NY

Updated: 7:08 am EDT Jun 30, 2026

Today Mostly Sunny	Tonight Slight Chance T-storms	Wednesday Mostly Sunny then Slight Chance T-storms	Wednesday Night Partly Cloudy	Thursday Sunny	Thursday Night Mostly Clear	Friday Sunny then Chance Showers	Friday Night Chance Showers then Partly Cloudy	Independence Day Mostly Sunny then Chance T-storms
Hi 87 °F	Lo 71 °F	Hi 91 °F	Lo 75 °F	Hi 96 °F	Lo 79 °F	Hi 97 °F	Lo 77 °F	Hi 96 °F

Hazardous Weather Outlook
Extreme Heat Watch

Today	Mostly sunny, with a high near 87. South wind 8 to 13 mph.
Tonight	A 20 percent chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 71. Southwest wind around 16 mph, with gusts as high as 28 mph.
Wednesday	A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 97. Southwest wind 10 to 13 mph.
Wednesday Night	Partly cloudy, with a low around 75. Southwest wind 11 to 13 mph.
Thursday	Sunny, with a high near 96. West wind 6 to 9 mph.
Thursday Night	Mostly clear, with a low around 79.
Friday	A 40 percent chance of showers after 2pm. Increasing clouds, with a high near 97.
Friday Night	A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 77.
Independence Day	A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96.
Saturday Night	A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74.
Sunday	A 30 percent chance of showers. Mostly sunny, with a high near 93.
Sunday Night	A 30 percent chance of showers. Mostly cloudy, with a low around 72.
Monday	A 30 percent chance of showers. Partly sunny, with a high near 86.

Forecast from NOAA-NWS for Oyster Bay NY.