464  
CDUS41 KPHI 180627  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
127 AM EST THU DEC 18 2014  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 17 2014
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1922 TO 2014  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 51 1221 PM 63 2000 40 11 24  
MINIMUM 37 1159 PM -2 1951 24 13 9  
AVERAGE 44 32 12 17  
 
PRECIPITATION (IN)  
YESTERDAY T 2.16 2000 0.11 -0.11 0.14  
MONTH TO DATE 2.49 2.15 0.34 2.32  
SINCE DEC 1 2.49 2.15 0.34 2.32  
SINCE JAN 1 43.56 43.92 -0.36 44.23  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.0 1919 0.2 -0.2 2.1  
MONTH TO DATE 0.6 2.4 -1.8 13.1  
SINCE DEC 1 0.6 2.4 -1.8 13.1  
SINCE JUL 1 6.3 3.1 3.2 13.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 21 33 -12 48  
MONTH TO DATE 478 522 -44 578  
SINCE DEC 1 478 522 -44 578  
SINCE JUL 1 1613 1702 -89 1737  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 807 757 50 927    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 9.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 1200 AM  
LOWEST 51 800 PM  
AVERAGE 74  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 40 62 2006  
MINIMUM TEMPERATURE (F) 23 5 1945  
 
 
SUNRISE AND SUNSET  
DECEMBER 18 2014......SUNRISE 720 AM EST SUNSET 436 PM EST  
DECEMBER 19 2014......SUNRISE 721 AM EST SUNSET 437 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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