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Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Light Rain

78°F

26°C

Humidity 74%
Wind Speed SW 8 mph
Barometer 30.01 in (1015.3 mb)
Dewpoint 69°F (21°C)
Visibility 9.00 mi
Heat Index80°F (27°C)
Last update 20 Aug 11:53 am EDT
Extended Forecast for

Hightstown NJ

Flood Watch until August 21, 02:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until August 21, 02:00am

    NOW until 2:00am Fri

    Flood Watch

  • This Afternoon

    High: 84 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then a slight chance of showers after 3am. Patchy fog after 1am. Low around 62. North wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 62 °F

    T-storms then
    Slight Chance
    T-storms and
    Patchy Fog

  • Friday

    Friday: Partly sunny, with a high near 79. North wind around 5 mph.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Calm wind becoming east around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 79 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms, mainly after 2pm. High near 84. South wind around 5 mph becoming east. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Tonight
Showers and thunderstorms before 2am, then a slight chance of showers after 3am. Patchy fog after 1am. Low around 62. North wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Friday
Partly sunny, with a high near 79. North wind around 5 mph.
Friday Night
A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Calm wind becoming east around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hightstown NJ
 40.29°N 74.54°W (Elev. 98 ft)
Last Update:
4:08 am EDT Aug 20, 2026
Forecast Valid:
12pm EDT Aug 20, 2026-6pm EDT Aug 26, 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