Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28° N Lon: 74.82° W Elev: 210 ft.

Fair

17°F

-8°C

Humidity 77%
Wind Speed W 5 mph
Barometer 29.94 in (1013.5 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 19 Jan 5:53 am EST
Detailed forecast for

Mercer County

Today
Mostly sunny. Highs in the mid 30s. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Tonight
Mostly clear. Cold with lows around 13. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as zero.
Tuesday
Sunny, colder with highs in the lower 20s. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 2 below.
Tuesday Night
Mostly clear. Cold with lows around 6 above. West winds 5 to 10 mph.
Wednesday
Mostly sunny. Not as cool with highs in the lower 30s. South winds 5 to 10 mph.
Wednesday Night
Mostly cloudy in the evening, then becoming partly cloudy. Not as cold. Near steady temperature in the upper 20s.
Thursday
Mostly sunny. Highs in the lower 40s.
Thursday Night
Partly cloudy. Cold with lows around 20.
Friday
Partly sunny. Colder with highs around 30.
Friday Night
Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows around 10 above.
Saturday
Mostly sunny and colder. Near steady temperature 15 to 20.
Saturday Night
Mostly cloudy. Cold with lows around 5 above.
Sunday
Partly sunny with a 40 percent chance of snow. Cold with highs around 20. Wind chill values as low as 5 below in the morning.



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400 AM EST Mon Jan 19 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database