donsutherland1

Today was just the 3rd 100° at Westhampton. It was also the first case where Central Park did not hit 100°.

Today is just the 5th time Islip and JFK reached 100 or above on the same day. Today is the first such day that Central Park didn’t reach 100. LaGuardia and Newark hit 100 or above on all those days.

I posted it in the wrong thread. I moved it and updated for LGA's 5 pm reading.

Today was a historic day for June. Numerous monthly records were tied or broken. Preliminary high temperatures included: Atlantic City: 102° (old record: 99°, 2010) Bangor: 97° (old record: 93°, 1938, 1963, 1975, 1995) Boston: 102° (old record: 95°, 1976 and 2013 ***New June record*** Bridgeport: 95° (old record: 94°, 1966) Concord: 100° (old record: 96°, 1870 ***Tied June record*** Islip: 101° (old record: 96°, 1966) ***New June record*** Manchester, NH: 102° (old record: 95°, 2013) ***New June record*** New York City-Central Park: 99° (old record: 96°, 1888) New York City-JFK Airport: 102° (old record: 97°, 2010) ***New June record*** New York City-LaGuardia Airport: 101° (old record: 96°, 2013) Newark: 103° (old record: 99°, 1923) ***Tied June record*** Philadelphia: 100° (old record: 99°, 1923) Portland, ME: 99° (old record: 93°, 1976) ***New June record*** Poughkeepsie: 100° (old record: 94°, 1945 and 2013) Providence: 100° (old record: 94°, 1980) ***New June record*** Westfield: 100° (old record: 94°, 2013) Westhampton: 100° (old record: 90°, 1966) ***New June record/tied all-time record*** All said, today is the most extreme June day on record in the New York City area. The five common stations with the extreme heat of June 26, 1952 (Bridgeport, Central Park, JFK, LaGuardia, and Newark) had a mean high temperature of 99.8° vs. the 99.4° in 1952. One more day of extreme heat is likely tomorrow. Temperatures will likely top out in the lower and middle 90s in much of the New York City area and upper 90s in the hot spots in New Jersey tomorrow. Afterward, it will turn cooler for Thursday through Saturday before temperatures warm again. The ENSO Region 1+2 anomaly was +1.0°C and the Region 3.4 anomaly was 0.2°C for the week centered around June 18. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.47°C and the ENSO Region 3.4 anomaly has averaged -0.03°C. Neutral ENSO conditions will likely continue through at least late summer. The SOI was +17.57 yesterday. The preliminary Arctic Oscillation (AO) was +1.610 today. Based on sensitivity analysis applied to the latest guidance, there is an implied 80% probability that New York City will have a warmer than normal June (1991-2020 normal). June will likely finish with a mean temperature near 73.0° (1.0° above normal).

No. 99.

Islip has reached 100.

My concern is that it is affected by the sun leading to artificially high readings.

98° on July 5, 1999, August 3, 2001, August 8-9, 2001 is the all-time record.

Newark has reached 103°. That ties the June monthly record that was set on June 30, 2021.

The 100° at Westhampton ties that location's all-time high. That mark was set on July 5, 1999 and tied on July 6, 2010.

The New York Downtown station (KJRB) has reached 105. I am not confident in its reliability. Having said that, parts of the City beyond JFK Airport did reach 100° based on the NYC Micronet.

The prior June mark was 92° on June 21, 2012. However, the POR is very short (1998 start).

Thick tree cover for Central Park. Westerly winds are ideal for heating the Boston area, as the air warms upon descent from the Berkshires.

Boston has reached 100°, which ties the June monthly record.

A @LibertyBelldream come true: JFK: 102

Newark has reached 100° for the second consecutive day. That ties June 2025 with June 1943, 1994, and 2021 for the most such days in June. The two consecutive days are the earliest-season occurrence of two or more 100° or above days. The old record was set during July 3-4, 1898.

JFK has hit 100 for the first time on record in June. The previous June record of 99 was set on June 26, 1949 and tied on June 26, 1952, June 29, 1959, and June 30, 1964.

Islip has now reached 97F (36.1C). That breaks the June monthly record of 96F (35.6C) that was set on June 24, 1966 and tied on June 19, 1994.

Islip has now reached 96F (35.6C). That ties the June monthly record that was set on June 24, 1966 and tied on June 19, 1994.

Atlantic City, JFK Airport, Newark, Norwood, and Wilmington, DE have all reached 96° so far. The East remains on track for multiple 100° highs. JFK could see its first such high in June.

As of 9:30, many areas have reached or exceeded 90°. Those areas include Atlantic City, Boston, Islip, New York City-JFK Airport, Newark, Philadelphia, and Providence. Elsewhere, Frankfort, IN had a dewpoint of 82°.

Timing has an impact.

Final low temperatures for yesterday and preliminary low temperatures for today:

Below is a list of some of the locations reaching 100° or above in the East:

Actually, the coefficients of determination are very high in June: JFK: 0.51; LGA: 0.61; NYC: 0.55. For JFK and NYC, every degree increase in the June low translates into a 1.0 degree rise in the high. For LGA, every degree increase translates into a 1.1 degree rise in the high during June.