National Weather Service

News Headlines

Now Accepting Applications for 2026 Summer Student Volunteers!

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

21°F

-6°C

Humidity	62%
Wind Speed	W 3 mph
Barometer	30.13 in (1020.0 mb)
Dewpoint	10°F (-12°C)
Visibility	10.00 mi
Last update	13 Feb 4:53 am EST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles SSE Princeton Junction NJ

Today
High: 35 °F
Sunny
Tonight
Low: 18 °F
Mostly Clear
then Slight
Chance Snow
Showers
Saturday
High: 43 °F
Mostly Sunny
Saturday Night
Low: 21 °F
Partly Cloudy
Sunday
High: 39 °F
Mostly Cloudy
Sunday Night
Low: 26 °F
Chance Snow
Washington's Birthday
High: 42 °F
Partly Sunny
Monday Night
Low: 30 °F
Mostly Cloudy
Tuesday
High: 49 °F
Partly Sunny

Detailed Forecast

Today

Sunny, with a high near 35. Northwest wind around 5 mph.

Tonight

A slight chance of snow showers after 3am. Increasing clouds, with a low around 18. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.

Saturday

Mostly sunny, with a high near 43. West wind around 5 mph.

Saturday Night

Partly cloudy, with a low around 21. Calm wind.

Sunday

Mostly cloudy, with a high near 39. Calm wind becoming east around 5 mph.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.

Washington's Birthday

Partly sunny, with a high near 42.

Monday Night

Mostly cloudy, with a low around 30.