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Extreme Heat Watch Issued for Coastal New Jersey

June 30, 2026 · wweather1 editorial · 1 min read

The National Weather Service (NWS) Mount Holly, NJ has issued an Extreme Heat Watch for Atlantic Coastal Cape May, Coastal Atlantic, and Coastal Ocean counties. Dangerously hot conditions, with heat index values up to 110, are possible from Thursday afternoon, July 2, through Saturday evening, July 4.

The Extreme Heat Watch, issued by the NWS Mount Holly, NJ on June 29 at 2:10 PM EDT, is in effect until July 4 at 8:00 PM EDT. It specifically covers Atlantic Coastal Cape May, Coastal Atlantic, and Coastal Ocean counties.

The watch warns of dangerously hot conditions, with potential heat index values reaching up to 110. Such extreme heat and high humidity events are noted to significantly increase the occurrence of heat-related illnesses.

These conditions are anticipated from Thursday afternoon, July 2, extending through Saturday evening, July 4.

Why it is dangerous and what to do

⚠️ Safety
• Drink plenty of fluids.
• Stay in an air-conditioned room and out of the sun.
• Check up on relatives and neighbors.
• Do not leave young children and pets in unattended vehicles.
📊 The numbers, from wweather1 data
Atlantic City: now +28°, Clear.
That is 4° above the June climate norm.
The record for this date is +36° (1945).
Three-day forecast: 30 June: +28°/+18° · 1 July: +28°/+20° · 2 July: +31°/+22°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

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📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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