What is the hottest month in Riverhead, NY?

July is the warmest month, with a normal high of 84°F at Riverhead Rsch Farm.

What is the coldest month in Riverhead, NY?

January is the coldest month, with a normal low of 26°F.

What is the wettest month in Riverhead, NY?

March has the most precipitation on average, about 4.72 inches.

Checked Oct 25, 2026

Riverhead, NY Climate

1991 to 2020 normals at Riverhead Rsch Farm, 2.1 mi from the center of Riverhead, elevation 100 ft.

Average weather by month

Select a month for daily normals and last year's weather

Month	High	Low	Precip.	Snow
January	40°	26°	3.79 in	--
February	41°	27°	3.31 in	--
March	48°	33°	4.72 in	--
April	60°	42°	4.08 in	--
May	70°	51°	3.60 in	--
June	79°	61°	3.82 in	--
July	84°	67°	3.05 in	--
August	82°	66°	3.93 in	--
September	76°	60°	4.07 in	--
October	65°	50°	4.46 in	--
November	54°	40°	3.81 in	--
December	45°	32°	4.58 in	--
Year	62°		47.22 in	--

Frequently asked questions

What is the hottest month in Riverhead, NY?: July is the warmest month, with a normal high of 84°F at Riverhead Rsch Farm.
What is the coldest month in Riverhead, NY?: January is the coldest month, with a normal low of 26°F.
What is the wettest month in Riverhead, NY?: March has the most precipitation on average, about 4.72 inches.

Today

Riverhead, NY forecast

Data sources

U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
U.S. Climate Normals 1991-2020 (daily) and GHCN-Daily via Access Data ServiceNOAA National Centers for Environmental Information · Official site

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About this data

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Climate normals are 30-year averages measured at one weather station, which may be miles from the place named here or at a different elevation.

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