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April 2021


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5 minutes ago, uofmiami said:

82 at 3pm for LGA, that didn't last long.

Yeah I rapidly shot up at the same time to 81. Its a thin line though, based on driving around a min ago its dramatically cooler once you get close to the Hutch pkwy. Still nice if you can forget about all the fanfare of a summer like day.

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Earlier today, there was a large spread between the temperature at Newark and New York City's LaGuardia Airport (cited by @bluewave). However, by 3 pm, that spread was reduced to 6°, as the temperature rose sharply to 82° at LaGuardia Airport from 71° an hour earlier.

Since October 7, 1939 when recordkeeping began at LaGuardia Airport, there have been 113 days on which Newark registered a high temperature that was 10° or above LaGuardia's daily high temperature. The most recent such day occurred just last week on April 21 when the temperature topped out at 75° in Newark and 65° at LaGuardia Airport.

The record difference is 16°, which was set on April 15, 1949 (EWR: 85°; LGA: 69°) and tied on April 20, 1993 (EWR: 80°; LGA: 69°).

The most frequent cases where Newark had a high temperature of 10° or more above LaGuardia Airport occurred during April.

Top 3 Months:
April: 47 (41.6%) days
March: 25 (22.1%) days
May: 23 (20.4%) days

Seasonal Ranking:
Spring: 95 (84.1%) days
Summer: 11 (9.7%) days
Winter: 5 (4.4%) days
Fall: 3 (2.7%) days

The reason for this timing concerns ocean temperatures. During the spring into the start of summer, the ocean is still relatively cool. During fall and winter, the ocean is relatively warm in contrast to air temperatures.

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1 hour ago, uofmiami said:

82 at 3pm for LGA, that didn't last long.

Yeah, now the temperature is back down to 71° at LGA. Very impressive hourly and daily temperature jumps since late March on the wind shifts.  The temperature on the South Shore back in late March rose from 57° to 80° in an hour.

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Just now, bluewave said:

Yeah, now the temperature is back down to 71° at LGA. Very impressive hourly and daily temperature jumps since late March on the wind shifts.  The temperature on the South Shore back in late March rose from 57° to 80° in an hour.

Wind here went sw for one hour around noon with the temp jumping from 73 to 83... thereafter back to onshore and dropping back thru the 70's.

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35 minutes ago, doncat said:

Wind here went sw for one hour around noon with the temp jumping from 73 to 83... thereafter back to onshore and dropping back thru the 70's.

This is one of the less common months when the high temperatures are driving the departures. NYC was +1.5 on the max and +0.3 on the min through yesterday. Frequent cold fronts and drier conditions have allowed the minimum temperatures to remain near normal while the high temperatures have been above average.

CLIMATE REPORT 
NATIONAL WEATHER SERVICE NEW YORK, NY
435 PM EDT WED APR 28 2021

...................................

...THE NEWARK NJ CLIMATE SUMMARY FOR APRIL 28 2021...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2021


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 TODAY                                                               
  MAXIMUM         89    157 PM  90    1990  67     22       68       
                                      2009                           
  MINIMUM         50    502 AM  33    1934  48      2       40       
  AVERAGE         70                        57     13       54   
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