What is the hottest month in Brookhaven, NY?

July is the warmest month, with a normal high of 83°F at Shirley Brookhaven AP.

What is the coldest month in Brookhaven, NY?

January is the coldest month, with a normal low of 24°F.

What is the wettest month in Brookhaven, NY?

March has the most precipitation on average, about 4.62 inches.

Checked Oct 25, 2026

Brookhaven, NY Climate

1991 to 2020 normals at Shirley Brookhaven AP, 3.8 mi from the center of Brookhaven, elevation 82 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	39°	24°	2.97 in	--
February	41°	25°	3.10 in	--
March	47°	31°	4.62 in	--
April	58°	40°	4.06 in	--
May	68°	49°	3.47 in	--
June	77°	60°	3.70 in	--
July	83°	66°	3.24 in	--
August	81°	65°	3.04 in	--
September	74°	57°	3.90 in	--
October	64°	46°	3.99 in	--
November	54°	37°	3.65 in	--
December	45°	29°	4.50 in	--
Year	61°		44.24 in	--

Frequently asked questions

What is the hottest month in Brookhaven, NY?: July is the warmest month, with a normal high of 83°F at Shirley Brookhaven AP.
What is the coldest month in Brookhaven, NY?: January is the coldest month, with a normal low of 24°F.
What is the wettest month in Brookhaven, NY?: March has the most precipitation on average, about 4.62 inches.

Today

Brookhaven, 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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