Will the heat wave break any records in New Jersey? Here's what to expect
New Jersey residents are in the midst of a dangerous stretch of extreme heat, with temperatures expected to soar into the upper 90s and low 100s through June 25 — bringing life-threatening conditions and the potential for record-breaking highs.
The National Weather Service has issued an excessive heat warning for most of the state through June 25, warning that the intense heat combined with high humidity could produce heat index values between 105 and 110 degrees.
By 7 a.m. June 23, the heat was already bearing down. In Bergen County, it was 78 degrees in Bergenfield with 91% humidity, and Lyndhurst hit 83. Vernon and New Brunswick both recorded 80 degrees, while Beach Haven—usually cooler thanks to ocean breezes—was already up to 81 as winds blew inland.
'It was already 75 with 80% humidity at 3 a.m. when I hit the road,' said local observer Bob Ziff of North Jersey Weather Observers. 'After a May that was two degrees below normal in Bergenfield, it finally feels like summer.'
Forecasts show Trenton reaching 99 degrees June 23 and a scorching 103 on June 24. New Brunswick is close behind with highs of 97 and 102, respectively.
'Heat tends to have cumulative effects on the body,' the National Weather Service said. 'We are currently forecasting four consecutive days of 95+ with Tuesday likely to feature high temperatures around 100 degrees.'
In Bergenfield, where the town usually sees five days above 90 degrees in June, the current heat wave is notable. Last June brought eight such days. Historical data shows even more extreme highs: Bergenfield reached 100 degrees on June 9, 2008, and 101 the next day.
Record temperatures for this time of year include Bergenfield's 98 degrees in 2024 on June 21 and Sussex County's 98 on June 25, recorded both in 1948 and 1952.
Health officials urge residents to stay indoors during peak heat hours, remain hydrated, and check on elderly neighbors or others without access to air conditioning. Outdoor workers and those with chronic health conditions are especially at risk.
'Unfortunately, there's no cooling down at the beach this morning,' Ziff noted.
New Jersey residents can look up a cooling center near them with this tool.
This article originally appeared on NorthJersey.com: New Jersey heat wave could break records for high temperatures
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