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Tour Stony Brook on Long Island
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Weather · January
Brookhaven weather in January
Average highs of 39°F, lows of 24°F and 3.0 in of rain, from 30 years of weather records.
January is Brookhaven’s coldest month, with average highs of 39°F and lows of 24°F. That is 5° cooler than December, and 22° below the yearly average high.
- Average high
- 39°F
- Average low
- 24°F
- Precipitation
- 3.0 in
- Wet days
- 11
- Sunrise · sunset
- 7:14 AM · 4:47 PM
January across the year
High and low Rain
What to wear in January
- Cold days: a winter coat, hat and gloves.
- Freezing nights: expect frost on cars in the morning.
- Pack an umbrella or rain jacket: rain or snow falls on about 11 days this month.
January is good for
Around Brookhaven
See Brookhaven
A look around town before you go.
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Watch on YouTube ↗January compared with the months around it
Planning a trip? See the best time to visit Brookhaven and today’s forecast.
Questions
How hot does it get in Brookhaven in January?
Average highs are 39°F and average lows 24°F, for a daily mean of 32°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Brookhaven in January?
January averages 3.0 in of precipitation over about 11 days with at least 0.01 in. It is the 11th wettest month of the year.
What time is sunset in Brookhaven in January?
Around mid-January the sun rises about 7:14 AM and sets about 4:47 PM, for roughly 9.6 hours of daylight.
Is January a good time to visit Brookhaven?
The mildest months for visiting are May, July, August. January is cold.
NOAA U.S. Climate Normals 1991–2020, Shirley Brookhaven Ap station (3.7 mi from downtown). Sunrise and sunset are calculated for January 15 at the city’s coordinates.