NWS Forecast for Southampton NY

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

Updated: 7:08 am EDT Jun 30, 2026

This Afternoon Mostly Sunny	Tonight Slight Chance T-storms	Wednesday Mostly Sunny then Slight Chance T-storms	Wednesday Night Slight Chance T-storms	Thursday Sunny	Thursday Night Mostly Clear	Friday Sunny	Friday Night Partly Cloudy	Independence Day Sunny
Hi 81 °F	Lo 68 °F	Hi 82 °F	Lo 70 °F	Hi 89 °F	Lo 73 °F	Hi 91 °F	Lo 73 °F	Hi 87 °F

Extreme Heat Watch
Hazardous Weather Outlook

This Afternoon	Mostly sunny, with a high near 81. Southwest wind 10 to 13 mph.
Tonight	A 20 percent chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 68. Southwest wind 10 to 14 mph.
Wednesday	A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Wednesday Night	A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Thursday	Sunny, with a high near 89. Southwest wind 9 to 14 mph.
Thursday Night	Mostly clear, with a low around 73.
Friday	Sunny, with a high near 91.
Friday Night	Partly cloudy, with a low around 73.
Independence Day	Sunny, with a high near 87.
Saturday Night	Partly cloudy, with a low around 72.
Sunday	Mostly sunny, with a high near 86.
Sunday Night	A 30 percent chance of showers. Mostly cloudy, with a low around 70.
Monday	A 30 percent chance of showers. Partly sunny, with a high near 82.

Forecast from NOAA-NWS for Southampton NY.