Trenton, New Jersey Weather:
Active Weather Warnings
Saturday, July 4, 2026
Hot Day
Day 99°
Night 72°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 11

Weather Alerts and Warnings for

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued June 29 at 5:17PM EDT until July 4 at 8:00PM EDT by NWS Mount Holly NJ
Jul 1, 12:00 PM Jul 4, 8:00 PM
WHAT: Dangerously hot conditions with heat index values up to 110
degrees possible.

WHERE: Portions of northern Delaware, central and southern New
Jersey, and southeast Pennsylvania.

WHEN: From Wednesday afternoon through Saturday evening.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.

ADDITIONAL DETAILS: Very warm low temperatures in the mid 70s to
low 80s at night will not offer any relief from the heat. This
combined with multiple days of near record breaking temperatures
will exacerbate the impacts from the heat and humidity.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. If you do not have air conditioning in your home or lack shelter, you can call 211 or visit your county or state health department website for assistance locating appropriate shelter from the heat.
Updated: Jun 30, 12:30 AM Source: NWS Alert