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Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Mostly Cloudy

74°F

23°C

Humidity 48%
Wind Speed NW 8 mph
Barometer 29.93 in (1012.6 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 22 Jul 10:53 pm EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. North wind around 5 mph.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. North wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 59. Calm wind.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Southeast wind 5 to 10 mph becoming light and variable in the evening.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. North wind around 5 mph.
Thursday
Sunny, with a high near 80. North wind 5 to 10 mph.
Thursday Night
Clear, with a low around 59. Calm wind.
Friday
Sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 60. Southeast wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A chance of showers after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.27°N 74.8°W (Elev. 157 ft)
Last Update:
11:37 pm EDT Jul 22, 2026
Forecast Valid:
11pm EDT Jul 22, 2026-6pm EDT Jul 29, 2026
 
Forecast Discussion
 
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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