donsutherland1

The 3 consecutive 100 degree days in 1948 occurred during August 26-28.

Below is some historic data on the frequency of 90° or above highs and 80° or above lows. The frequency of 90° lows has decreased in parts of the July while increasing during roughly the July 15-25 period. Central Park's dense tree cover has likely contributed to the decreased frequency in parts of July. Central Park has seen 10 days with a decrease, including five days with a greater than 5 percentage point decrease. The nearest station (LaGuardia) has seen an increase on all but 3 days in July. Newark has seen a decrease on only 4 days. Both LaGuardia and Newark saw a decrease of greater than 5 percentage points on one day. JFK is affected by the sea breeze, which adds to the variability. Nevertheless, JFK has seen a greater than 5 percentage point decrease on only one day.

Final Data for the New York City Area’s Most Extreme June Heatwave on Record:

All the sites held onto their 80 or above lows yesterday.

Yesterday's final low temperatures:

Prior to 2025, here are the frequencies of 80 or above lows and 90 or above highs in Central Park during summer.

A selection of records from today:

The New York City area's most severe June heatwave is now concluding. The June 23-25 period saw the highest composite mean high temperature for the New York City area and the highest 3-day composite mean high temperature. No other event comes close. It even beat the synthetic 1- and 3-day periods. The synthetic 1-day mean temperature included all the pre-2025 highest June temperatures on record for a one-day period. The synthetic 3-day mean temperature include all of the pre-2025 3-day periods with the highest June average high temperatures on record. Comparisons:

The 30.3" snowstorm (10 sigma) is a rarer event than the back-to-back 102° days in June (6.7 sigma).

083 SXUS71 KOKX 251708 RERJFK RECORD EVENT REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 107 PM EDT WED JUN 25 2025 ...RECORD DAILY HIGH TEMPERATURE SET AND RECORD MONTHLY HIGH TEMPERATURE TIED AT JOHN F. KENNEDY AIRPORT... THE HIGH TEMPERATURE REACHED 102 DEGREES SO FAR TODAY AT JOHN F. KENNEDY AIRPORT. THIS BREAKS THE OLD DAILY RECORD OF 98 DEGREES, SET IN 1952. THIS ALSO TIES THE MONTHLY RECORD OF 102 SET YESTERDAY, JUNE 24TH 2025, MAKING TODAY TIED FOR THE HOTTEST JUNE DAY ON RECORD AT THIS SITE. THIS PRODUCT WILL BE UPDATED THIS AFTERNOON SHOULD TEMPERATURES CONTINUE TO RISE. RECORDS GO BACK TO THE YEAR 1948 AT THIS CLIMATE STATION. ALL CLIMATE DATA ARE CONSIDERED PRELIMINARY UNTIL REVIEWED BY THE NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION (NCEI). $$

Tthe two consecutive 102° highs at JFK Airport (June 24-25, 2025) is only the second such streak on record there. The only other streak occurred during July 22-23, 2011.

JFK: 100

New Haven has reached 95°. June 24-25, 2025 is the only case where New Haven has seen 2 consecutive such days. The June monthly record is 96°, which was set June 17, 1957 and tied yesterday.

It will be a close call. Some of the guidance keeps the low at or above 80.

Following yesterday's June monthly record-tying 96F (35.6C) high, New Haven has reached 90F (32.2C) for the 4th consecutive day, breaking the June mark of 3 days from June 20-22, 2012 & June 28-30, 2021. The prior earliest such streak occurred during July 4-7, 2010.

Historical tidbit while temperatures climb. Since 1869, Central Park has had 39 days with low temperatures of 81° or above. All 39 days had highs of 90° or above. The lowest high occurred on July 3, 1876 when the low was 81° and the high was 90°.

Islip has reached 90F (32.2C) for the 4th consecutive day. That ties the record for the longest June heatwave. That record was set during June 24-27, 2003. The current heatwave is the earliest 4-day one on record.

June 25-28 was in 1963. I typed the wrong date.

Yes. EWR, JFK, and LGA all hit 100 or above. Central Park didn't.

No. It was 1984. The highs on June 8-11, 1984 were 90, 96, 93, 93.

There was no air conditioning back then and some of the nights were brutally warm, too.

JFK Airport has reached 90F (32.2C) for the 4th consecutive day. That ties the record for the longest June heatwave. The record was set during June 25-28, 1963 and tied during June 8-11, 1984 and June 24-27, 2003.

None of the three prior streaks had a 100° or above high.

Preliminary overnight lows for June 25:

Newark is on track to have its earliest stretch of 3 consecutive 80F (26.7C) or above lows on record. The existing record was set during July 8-10, 1993.