Current conditions at

Trenton-Mercer Airport (KTTN)

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

Fair

79°F

26°C

Humidity 42%
Wind Speed NW 8 mph
Barometer 30.04 in (1016.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 1 Apr 4:53 pm EDT
Detailed forecast for

Mercer County

Tonight
Showers with a slight chance of thunderstorms. Much cooler with lows in the mid 40s. Northeast winds 10 to 15 mph. Chance of rain 90 percent.
Thursday
Cloudy with a 20 percent chance of showers. Much cooler. Near steady temperature in the upper 40s. East winds 10 to 15 mph.
Thursday Night
Cloudy. Lows in the lower 40s. East winds 5 to 10 mph.
Friday
Mostly cloudy in the morning, then becoming partly sunny. Much warmer with highs in the upper 70s. Southeast winds around 5 mph, becoming southwest 10 to 15 mph in the afternoon.
Friday Night
Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the upper 50s. Southwest winds 5 to 10 mph.
Saturday
Mostly sunny. Highs in the lower 80s.
Saturday Night
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 50s. Chance of rain 40 percent.
Sunday
Showers. Not as warm with highs in the lower 70s. Chance of rain 90 percent.
Sunday Night
Mostly cloudy. Showers, mainly in the evening. Much cooler with lows around 40. Chance of rain 90 percent.
Monday
Mostly sunny. Much cooler with highs in the mid 50s.
Monday Night
Mostly clear. Lows in the mid 30s.
Tuesday
Mostly sunny. Highs in the mid 50s.
Tuesday Night
Partly cloudy in the evening, then clearing. Cold with lows in the lower 30s.
Wednesday
Sunny. Highs in the lower 50s.



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457 PM EDT Wed Apr 1 2026
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database