bluewave

All official temperature readings are taken in the sun with a fan-aspirated radiation shield. Put that set up under a stand of mature trees and the temperature will drop from 3° to sometimes 5° degrees on warm sunny days. Prior to the 1990s the sensor and shield with the fan was in direct sunlight. So this sets up the discontinuity between the pre and post 1990s temperature readings from Central Park. This is why Newark and NYC used to trade places with which station was warmer from 1930 to 1980. It’s possible the tree growth was becoming an issue in the 80s to early 90s. But really became pronounced since the 1990s and especially since 2013.

The main point is that it wasn’t in the shade prior to the 1990s. Those trees grew up around and over that platform. So when all those old 90s and 100s records occurred from the 1930s into the 1980s, it had more of an open exposure like the current 102° a few blocks to the east. So subtract 3° to 5° from all those old records and there would have been hardly any days over 100° from the 1930s into the 1980s if the trees were there in those days.

RECORD EVENT REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 307 PM EDT TUE JUN 24 2025 ...RECORD DAILY AND MONTHLY HIGH TEMPERATURE SET AT ISLIP MACARTHUR AIRPORT... THE HIGH TEMPERATURE REACHED 100 DEGREES SO FAR TODAY AT ISLIP MACARTHUR AIRPORT. THIS BREAKS THE OLD DAILY RECORD OF 96 DEGREES, SET IN 1966. THIS ALSO BREAKS THE MONTHLY RECORD SET IN 1966 AND 1994, MAKING TODAY THE HOTTEST JUNE DAY ON RECORD AT THIS SITE. THIS PRODUCT WILL BE UPDATED SHOULD TEMPERATURES CONTINUE TO RISE. RECORDS FOR THE ISLIP NY AREA GO BACK TO 1963. ALL CLIMATE DATA ARE CONSIDERED PRELIMINARY UNTIL REVIEWED BY THE NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION (NCEI).

Lefferts/ South Ozone Park now 103°.

Pretty wild to see MTP hit 97°. Weather conditions for: Montauk, Montauk Airport, NY (ASOS/AWOS - OKX) Elev: 7.0 ft; Lat/Lon: 41.07306/-71.92333 Get Yearly Precip Total (non QA/QC'd data) Get Water Year Precip Total (non QA/QC'd data): For selected observations near this location: click here Date/Time (L) Temp. (°F) Dew Point (°F) Relative Humidity (%) Heat Index (°F) Wind Direction Wind Speed (mph) Sea Level Pressure (mb) Station Pressure (in Hg) Altimeter Setting (in Hg) 6 Hr Max (°F) 6 Hr Min (°F) 24 Hr Max (°F) 24 Hr Min (°F) Jun 24, 1:54 pm 97 72 45 106 W 6 1017.30 30.03 30.04 97 82

Corona, Newark, and Harrison now at 102°.

100° now a few blocks east of the ASOS on 75th street on the ENSO west network. With several 100°+ readings just outside the Park on Wunderground.

JFK at 101° now. RECORD EVENT REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 1233 PM EDT TUE JUN 24 2025 ...RECORD DAILY AND MONTHLY HIGH TEMPERATURE SET AT JOHN F. KENNEDY AIRPORT... THE HIGH TEMPERATURE REACHED 101 DEGREES SO FAR TODAY AT JOHN F. KENNEDY AIRPORT. THIS BREAKS THE OLD DAILY RECORD OF 97 DEGREES, SET IN 2010. THIS ALSO BREAKS THE MONTHLY RECORD OF 99 SET IN 1949, 1952, 1959 AND 1964, MAKING TODAY 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).

The mesonet sites had to find spots which would allow weather stations to be set up. There is a park on the south side of Merrick road at the Wantagh site which had the open land. Plus it’s right next to the old Wantagh COOP which registered the 107° reading back in 2010.

Yeah, this is how Mineola and Wantagh got to 108° and 107° back in July 2010. Downslope flow off the moraine which created compressional warming just on the Inland side of the sea breeze front. The zone this afternoon where the downslope meets the sea breeze will probably go 102° to 104° with maybe a 105° max in the warmest spots from Queens and Brooklyn into Nassau. Monthly Data for July 2010 for New York Click column heading to sort ascending, click again to sort descending. MINEOLA COOP 108 WANTAGH CEDAR CREEK COOP 107 LAGUARDIA AIRPORT WBAN 103 NY CITY CENTRAL PARK WBAN 103 WEST POINT COOP 103 RHINEBECK 4SE COOP 103 SHIRLEY BROOKHAVEN AIRPORT WBAN 103 New York-LGA Area ThreadEx 103 New York-Central Park Area ThreadEx 103 FARMINGDALE REPUBLIC AP WBAN 102 DOBBS FERRY-ARDSLEY COOP 102 POUGHKEEPSIE/HUDSON VALLEY REGIONAL AIRPORT WBAN 102 WESTCHESTER CO AP WBAN 102 Poughkeepsie Area ThreadEx 102 STONYKILL NEW YORK RAWS 102 ISLIP-LI MACARTHUR AP WBAN 101 ROSENDALE 2 E COOP 101 BLOOMINGBURG 2 SW COOP 101 JFK INTERNATIONAL AIRPORT WBAN 101

I am hoping they can manage the power demands on the system later to avoid anything more than some scattered outages or brown outs. Running 24hrs uninterrupted with the heat index over 90° is impressive. So usage should really spike this afternoon.

I see what you mean. I actually drove to the mesonet site in Wantagh when I was back on the South Shore. It’s located in a park just east of the Wantagh Parkway. I will bet you can find the Corona one if you look for that street view showing up on the camera.

Yeah, you can see the exact spot when you open the map in the layers tab.

It has to be since they use those sensors as one tool to gauge the power demands on the Con Edison power grid. This is the highest precision temperature coverage NYC has ever had. It’s an extension of the NY State Mesonet.

You are correct. This is the first time that JFK reached 90° at 8am in June. So they could reach 100° before noon if the sea breeze can hold off. https://mesonet.agron.iastate.edu/plotting/auto/?_wait=no&q=153&network=NY_ASOS&zstation=JFK&month=jun&sday=0624&eday=1231&var=max_tmpf&_r=t&dpi=100&_fmt=png

The HRRR is the most aggressive in suppressing the sea breeze allowing JFK to reach 100°. The other guidance is just a few miles north stalling along the Belt Parkway to Southern State. Somebody just north of sea breeze with downslope compressional warming will probably go 102°-104°. Maybe a peak somewhere of 105° from Newark to Central Queens and perhaps NW Nassau.

It will be a race at JFK today to see if they can reach 100° before the sea breeze. The record ridge is so strong that the Bermuda high pressure is building much further north into Canada. So it leaves a little weakness in the ridge near our area that allows a sea breeze south of the Belt Parkway and the Southern State on Western LI.

Warm spots like Glendale/ Maspeth Queens already 88° after a low of 83°.

The extension of the record Aleutian Ridge closer to Japan has actually slowed the start of the rainy season there with the record heat.

Pretty impressive for so far north this early in the season to tie an all-time high. ...AN ALL-TIME RECORD HIGH TEMPERATURE TIED AND A DAILY HIGH TEMPERATURE RECORD SET AT PLATTSBURGH NY... AN ALL TIME RECORD HIGH TEMPERATURE OF 101 DEGREES WAS TIED AT PLATTSBURGH NY YESTERDAY. THIS TIES THE OLD RECORD OF 101 DEGREES SET ON AUGUST 1ST AND 2ND IN 1975 AND AUGUST 5TH IN 1955.

It seems to have lingered from the winter and spring with the record westerly winds that caused all the upwelling. But the current cool spot is much smaller than it was. Though the local SSTs are still a bit below average for this time of year.

Shorter term guidance showing more of a sea breeze tomorrow south of the Belt and Southern State Parkways .So it’s possible that JFK only makes it to 98-99° with 102° to 104° just north near Corona, Queens. Someone in the area could get very close to 105° where the best compressional warming occurs.

They beat the record that was just set last year. RECORD EVENT REPORT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 0239 PM EDT MON JUN 23 2025 ...RECORD HIGH TEMPERATURE SET AT ALLENTOWN PA... AS OF 230 PM, THE TEMPERATURE AT THE LEHIGH VALLEY INTERNATIONAL AIRPORT HAS REACHED 97 DEGREES SO FAR TODAY. THIS BREAKS THE OLD RECORD OF 96 DEGREES SET IN 2024. THIS REPORT WILL BE UPDATED AGAIN LATER THIS AFTERNOON. TEMPERATURE RECORDS FOR THE PHILADELPHIA AREA DATE BACK TO 1922. RECORD EVENT REPORT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 0235 PM EDT MON JUN 23 2025 ...RECORD HIGH TEMPERATURE SET AT MOUNT POCONO PA... AS OF 230 PM, THE TEMPERATURE AT THE POCONO MOUNTAINS REGIONAL AIRPORT NEAR MOUNT POCONO PA HAS REACHED 91 DEGREES. THIS BREAKS THE RECORD HIGH TEMPERATURE OF 90 DEGREES SET IN 1908. THIS IS ALSO THE FIRST 90 DEGREE OR HIGHER TEMPERATURE IN THE MOUNT POCONO AREA IN 13 YEARS, WHEN THE HIGH WAS 90 DEGREES ON JULY 19, 2013. THIS REPORT WILL BE UPDATED AGAIN LATER THIS AFTERNOON. TEMPERATURE RECORDS AT MOUNT POCONO PA DATE BACK TO 1901.

Yeah, looks lIke around 15 individual sites made it to 100°-101° on the NJ WX Network.

Yeah, feels like in the warm season is the heat index. Feels like during the winter is the wind chill. The actual 80° dewpoint up near the VT border is probably a first for June.