Forecast

WeatherUnderground 6-day Forecast: Riverhead, NY USA

Today	Tomorrow	Saturday	Sunday	Monday	Tuesday

Rain, Wind	Cloudy	Mostly Cloudy	Partly Cloudy	Mostly Sunny	Cloudy
0.26 in


54°F	61°F	63°F	68°F	70°F	69°F
UV: 3 Moderate	UV: 5 Moderate	UV: 7 High	UV: 8 Very High	UV: 8 Very High	UV: 4 Moderate

Tonight	Tomorrow night	Saturday night	Sunday night	Monday night	Tuesday night

Rain Early	Partly Cloudy	Partly Cloudy	Partly Cloudy	Partly Cloudy	Cloudy
0.23 in


45°F	48°F	51°F	52°F	52°F	55°F

Today	Rain and wind. High 54F. Winds NE at 20 to 30 mph. Chance of rain 100%. Rainfall around a quarter of an inch. Locally heavier rainfall possible.
Tonight	Cloudy with occasional rain...mainly this evening. Low near 45F. Winds NNW at 10 to 20 mph. Chance of rain 80%. Rainfall around a quarter of an inch.
Tomorrow	Overcast. High 61F. Winds W at 10 to 15 mph.
Tomorrow night	Considerable clouds early. Some decrease in clouds late. Low 48F. Winds W at 5 to 10 mph.
Saturday	Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 63F. Winds WNW at 15 to 25 mph. Higher wind gusts possible.
Saturday night	Partly cloudy skies. Low 51F. Winds WNW at 10 to 15 mph.
Sunday	Partly cloudy skies. High 68F. Winds WNW at 10 to 20 mph.
Sunday night	Partly cloudy skies. Low 52F. Winds NW at 5 to 10 mph.
Monday	Mostly sunny skies. High near 70F. Winds WNW at 5 to 10 mph.
Monday night	Partly cloudy in the evening with more clouds for later at night. Low 52F. Winds light and variable.
Tuesday	Cloudy skies. Slight chance of a rain shower. High 69F. Winds SW at 10 to 15 mph.
Tuesday night	Cloudy. Low around 55F. Winds SSE at 5 to 10 mph.

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: 3:21 am EDT May 22, 2025

Riverhead, NY (ERH)

Today Rain	Friday Chance Rain Showers	Saturday Slight Chance Rain Showers	Sunday Mostly Sunny	Memorial Day Sunny	Tuesday Chance Rain Showers	Wednesday Chance Rain Showers
Hi 55 °F	Hi 61 °F	Hi 66 °F	Hi 68 °F	Hi 71 °F	Hi 68 °F	Hi 68 °F

Tonight Light Rain Likely then Rain Showers Likely	Friday Night Chance Rain Showers	Saturday Night Slight Chance Rain Showers then Partly Cloudy	Sunday Night Mostly Clear	Monday Night Mostly Cloudy then Slight Chance Rain Showers	Tuesday Night Chance Rain Showers	Wednesday Night Chance Rain Showers
Lo 44 °F	Lo 50 °F	Lo 51 °F	Lo 52 °F	Lo 54 °F	Lo 54 °F	Lo 55 °F

Coastal Flood Advisory

Today	Rain. Cloudy. High near 55, with temperatures falling to around 52 in the afternoon. Northeast wind around 23 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Tonight	Rain likely before 7pm, then rain showers likely. Cloudy, with a low around 44. North wind 10 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday	A chance of rain showers. Mostly cloudy. High near 61, with temperatures falling to around 59 in the afternoon. West wind around 9 mph. Chance of precipitation is 30%.
Friday Night	A chance of rain showers. Mostly cloudy, with a low around 50. West wind 8 to 12 mph. Chance of precipitation is 30%.
Saturday	A slight chance of rain showers. Mostly sunny, with a high near 66. West wind 12 to 15 mph. Chance of precipitation is 20%.
Saturday Night	A slight chance of rain showers before 8pm. Partly cloudy. Low around 51, with temperatures rising to around 53 overnight.
Sunday	Mostly sunny, with a high near 68.
Sunday Night	Mostly clear, with a low around 52.
Memorial Day	Sunny, with a high near 71.
Monday Night	A slight chance of rain showers after 2am. Mostly cloudy, with a low around 54.
Tuesday	A chance of rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
Tuesday Night	A chance of rain showers. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Wednesday	A chance of rain showers. Partly sunny, with a high near 68. Chance of precipitation is 40%.
Wednesday Night	A chance of rain showers before 3am. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Riverhead, NY.

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