Current conditions at

Trenton-Mercer Airport (KTTN)

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

Overcast

51°F

11°C

Humidity 89%
Wind Speed Calm
Barometer 29.77 in (1007.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 30 Apr 10:53 am EDT
Detailed forecast for

Mercer County

Today
Mostly cloudy this morning, then partly sunny with a slight chance of showers this afternoon. Highs in the mid 60s. North winds around 5 mph, becoming northwest this afternoon. Chance of rain 20 percent.
Tonight
Partly cloudy. Lows in the lower 40s. Northwest winds 5 to 10 mph.
Friday
Sunny. Highs in the mid 60s. Northwest winds 5 to 10 mph.
Friday Night
Mostly cloudy with a 40 percent chance of showers. Lows in the mid 40s. West winds around 5 mph.
Saturday
Mostly cloudy. A chance of rain in the afternoon. Highs in the lower 60s. West winds around 5 mph. Chance of rain 40 percent.
Saturday Night
Mostly cloudy with a 40 percent chance of rain. Lows in the lower 40s.
Sunday
Mostly sunny. Highs around 60.
Sunday Night
Mostly clear. Lows around 40.
Monday
Mostly sunny. Highs in the upper 60s.
Monday Night
Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the lower 50s.
Tuesday
Mostly sunny. Highs in the upper 70s.
Tuesday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s.
Wednesday
Partly sunny. A chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 40 percent.



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421 AM EDT Thu Apr 30 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database