871  
CDUS41 KPHI 220600  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
100 AM EST SUN DEC 22 2024  
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 21 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1922 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 32 3:28 AM 64 2018 42 -10 45  
MINIMUM 15 11:55 PM -3 1942 26 -11 27  
AVERAGE 24 34 -10 36  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.44 2012 0.11 -0.10 0.00  
MONTH TO DATE 2.55 2.74 -0.19 6.10  
SINCE DEC 1 2.55 2.74 -0.19 6.10  
SINCE JAN 1 40.75 46.24 -5.49 43.86  
 
SNOWFALL (IN)  
YESTERDAY 0.1 4.1 1959 0.2 -0.1 0.0  
MONTH TO DATE 4.1 2.9 1.2 T  
SINCE DEC 1 4.1 2.9 1.2 T  
SINCE JUL 1 4.1 4.0 0.1 T  
SNOW DEPTH 4  
 
DEGREE DAYS  
HEATING  
YESTERDAY 41 31 10 29  
MONTH TO DATE 664 606 58 546  
SINCE DEC 1 664 606 58 546  
SINCE JUL 1 1533 1645 -112 1633  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 994 981 13 790    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 12.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 12:00 AM  
LOWEST 43 6:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 41 65 2013  
MINIMUM TEMPERATURE (F) 26 -2 1944  
 
SUNRISE AND SUNSET  
DECEMBER 22 2024......SUNRISE 7:23 AM EST SUNSET 4:39 PM EST  
DECEMBER 23 2024......SUNRISE 7:23 AM EST SUNSET 4:39 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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