What is the hottest month in Dover, NJ?

July is the warmest month, with a normal high of 85°F at Boonton 1 SE.

What is the coldest month in Dover, NJ?

January is the coldest month, with a normal low of 21°F.

What is the wettest month in Dover, NJ?

June has the most precipitation on average, about 4.91 inches.

Checked Oct 25, 2026

Dover, NJ Climate

1991 to 2020 normals at Boonton 1 SE, 8.4 mi from the center of Dover, elevation 280 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	38°	21°	3.73 in	--
February	40°	22°	2.79 in	--
March	48°	29°	4.16 in	--
April	61°	39°	3.63 in	--
May	71°	49°	3.95 in	--
June	81°	59°	4.91 in	--
July	85°	64°	4.70 in	--
August	84°	62°	3.67 in	--
September	77°	54°	4.68 in	--
October	64°	42°	4.54 in	--
November	53°	33°	4.06 in	--
December	42°	26°	4.36 in	--
Year	62°		49.18 in	--

Frequently asked questions

What is the hottest month in Dover, NJ?: July is the warmest month, with a normal high of 85°F at Boonton 1 SE.
What is the coldest month in Dover, NJ?: January is the coldest month, with a normal low of 21°F.
What is the wettest month in Dover, NJ?: June has the most precipitation on average, about 4.91 inches.

Today

Dover, NJ 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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