Forecast

WeatherUnderground 6-day Forecast: Riverhead, NY USA

Today	Sunny. High 87F. Winds WNW at 10 to 15 mph.
Tonight	A few passing clouds. Low 61F. Winds SW at 5 to 10 mph.
Tomorrow	Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 84F. Winds SSW at 10 to 20 mph.
Tomorrow night	Cloudy with occasional rain showers. Low 62F. Winds SSW at 10 to 15 mph. Chance of rain 60%.
Monday	Intervals of clouds and sunshine. Cooler and less humid. High 77F. Winds NW at 10 to 20 mph.
Monday night	A few clouds from time to time. Low 57F. Winds NNW at 5 to 10 mph.
Tuesday	Intervals of clouds and sunshine. High around 75F. Winds W at 5 to 10 mph.
Tuesday night	A few clouds overnight. Low 57F. Winds S at 5 to 10 mph.
Wednesday	Partly to mostly cloudy. High 74F. Winds SSE at 10 to 15 mph.
Wednesday night	Mostly cloudy skies with a few showers late. Low near 60F. Winds S at 5 to 10 mph. Chance of rain 30%.
Thursday	A few showers in the morning, then clouds lingering in the afternoon. High 77F. Winds S at 15 to 25 mph. Chance of rain 30%.
Thursday night	Rain showers early with clearing later at night. Low near 65F. Winds SW at 10 to 20 mph. Chance of rain 50%.

WeatherUnderground forecast for Riverhead, NY USA.
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National Weather Service Forecast for: Riverhead, NY
Issued by: National Weather Service New York/Upton, NY

Updated: 2:50 am EDT Jun 13, 2026

Riverhead, NY (ERH)

Today Sunny	Sunday Mostly Sunny	Monday Chance Rain Showers then Mostly Sunny	Tuesday Mostly Sunny	Wednesday Mostly Sunny	Thursday Chance Showers And T-Storms	Juneteenth Slight Chance Rain Showers
Hi 88 °F	Hi 90 °F	Hi 84 °F	Hi 84 °F	Hi 84 °F	Hi 88 °F	Hi 92 °F

Tonight Mostly Clear	Sunday Night Showers And T-Storms Likely	Monday Night Partly Cloudy	Tuesday Night Partly Cloudy	Wednesday Night Partly Cloudy then Slight Chance Rain Showers	Thursday Night Chance Showers And T-Storms	Friday Night Slight Chance Rain Showers then Partly Cloudy
Lo 67 °F	Lo 66 °F	Lo 63 °F	Lo 64 °F	Lo 66 °F	Lo 71 °F	Lo 69 °F

Today	Sunny, with a high near 88. Northwest wind around 10 mph.
Tonight	Mostly clear, with a low around 67. Southwest wind 1 to 7 mph.
Sunday	Mostly sunny. High near 90, with temperatures falling to around 85 in the afternoon. South wind 2 to 14 mph.
Sunday Night	Showers and thunderstorms likely after 8pm. Mostly cloudy, with a low around 66. Southwest wind 8 to 14 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday	A chance of rain showers before 8am. Mostly sunny, with a high near 84. West wind around 12 mph. Chance of precipitation is 40%.
Monday Night	Partly cloudy, with a low around 63.
Tuesday	Mostly sunny, with a high near 84.
Tuesday Night	Partly cloudy, with a low around 64.
Wednesday	Mostly sunny, with a high near 84.
Wednesday Night	A slight chance of rain showers after 2am. Partly cloudy, with a low around 66.
Thursday	A slight chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Thursday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Juneteenth	A slight chance of rain showers. Mostly sunny, with a high near 92.
Friday Night	A slight chance of rain showers before 8pm. Partly cloudy, with a low around 69.

Forecast from NOAA-NWS for Riverhead, NY.

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