Climate

Brookhaven weather by month

Average highs, lows, rain and snow for every month, from 30 years of weather records.

Average temperatures

Best time to visit: May, July, August, when highs are mild and rain is lightest.

Month	High	Low	Rain	Wet days
January	39°F	24°F	3.0 in	11
February	41°F	25°F	3.1 in	10
March	47°F	31°F	4.6 in	11
April	58°F	40°F	4.1 in	12
May	68°F	49°F	3.5 in	13
June	77°F	60°F	3.7 in	11
July	83°F	66°F	3.2 in	10
August	81°F	65°F	3.0 in	11
September	74°F	57°F	3.9 in	11
October	64°F	46°F	4.0 in	12
November	54°F	37°F	3.6 in	10
December	45°F	29°F	4.5 in	12

NOAA U.S. Climate Normals 1991–2020, Shirley Brookhaven Ap, Ny Us (3.7 mi away, 82 ft). Wet days: days with at least 0.01 in of precipitation.

What is the hottest month in Brookhaven?

July, with an average high of 83°F and low of 66°F.

What is the coldest month in Brookhaven?

January, with an average low of 24°F and high of 39°F.

When does it rain most in Brookhaven?

March is the wettest month, averaging 4.6 in of precipitation; the year totals about 44.2 inches.

What is the best time to visit Brookhaven?

For mild weather (highs between 65°F and 85°F) with the least rain, May, July, August.

Where do these numbers come from?

NOAA’s 1991–2020 U.S. Climate Normals for the Shirley Brookhaven Ap weather station, 3.7 miles from downtown: 30-year averages, not a forecast.