National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

47°F

8°C

Humidity 31%
Wind Speed N 14 G 23 mph
Barometer 30.22 in (1023.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 20 Apr 6:53 pm EDT
Extended Forecast for

Rocky Hill NJ

Freeze Warning April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Warning

  • Tonight

    Tonight: Mostly clear, with a low around 25. North wind 5 to 10 mph.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 56. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Increasing clouds, with a low around 42. Calm wind becoming south around 5 mph in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 2pm. Partly sunny, with a high near 65. Southeast wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 2am. Partly cloudy, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 25. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 56. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
A chance of showers after 2am. Increasing clouds, with a low around 42. Calm wind becoming south around 5 mph in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers before 2pm. Partly sunny, with a high near 65. Southeast wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Partly cloudy, with a low around 44. Calm wind.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 69.
Friday Night
A chance of showers after 2am. Partly cloudy, with a low around 47. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rocky Hill NJ
 40.41°N 74.63°W (Elev. 98 ft)
Last Update:
4:10 pm EDT Apr 20, 2026
Forecast Valid:
7pm EDT Apr 20, 2026-6pm EDT Apr 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation