New Jersey, 2025

Excessive Heat in New Jersey, June 23, 2025

June 23, 2025 · NWS OKX · 1 event in 1 county or zone

An anomalously hot air mass overspread Northeastern New Jersey on June 23, 2025 as high pressure was centered over the Ohio and Tennessee Valleys. Heat index values peaked at around 110 degrees F in the afternoon.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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  • Heat and drought
  • Cold
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The toll

Deaths
0
Injuries
166
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS OKX wrote it up.

An anomalously hot air mass overspread Northeastern New Jersey on June 23, 2025 as high pressure was centered over the Ohio and Tennessee Valleys. Heat index values peaked at around 110 degrees F in the afternoon.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 excessive heat. Local standard time, as filed.

Excessive Heat, Eastern Passaic

When
June 23, 9:00 AM EST to 9:00 PM EST
Where
Eastern Passaic forecast zone
Injuries
166 direct, 0 indirect
Reported by
Newspaper
Coordinates
41.034, -74.300 (the zone’s center; the record gives no point)

Based on ASOS station KTEB, Teterboro Airport in Teterboro, New Jersey, heat index values in nearby locations reached extreme heat criteria values of at least 105 degrees F from approximately 930 AM through 1830 PM Local Standard Time. Media reported that approximately 150 attendees of two outdoor high school graduation ceremonies during the late morning into early afternoon for the Paterson, NJ school district were treated for heat exhaustion, with another 16 sent to the hospital for treatment of more serious levels of heat exhaustion.

What these are

Excessive Heat
Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in New Jersey in 2025Every state in 2025This day in weather historyWarnings in New Jersey, June 2025

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1256163.