493  
CDUS41 KPHI 090555  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
1252 AM EST SUN DEC 9 2018  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 8 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1922 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 36 255 PM 67 1980 43 -7 35  
MINIMUM 17 327 AM 3 1926 26 -9 29  
AVERAGE 27 34 -7 32  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.88 1974 0.13 -0.13 0.00  
MONTH TO DATE 0.79 1.05 -0.26 0.22  
SINCE DEC 1 0.79 1.05 -0.26 0.22  
SINCE JAN 1 61.51 42.82 18.69 48.52  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.0 1917 0.2 -0.2 0.0  
MONTH TO DATE T 1.0 -1.0 T  
SINCE DEC 1 T 1.0 -1.0 T  
SINCE JUL 1 8.1 1.7 6.4 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 38 30 8 33  
MONTH TO DATE 238 233 5 203  
SINCE DEC 1 238 233 5 203  
SINCE JUL 1 1301 1413 -112 1116  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1287 757 530 1004    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 4.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 600 AM  
LOWEST 44 100 PM  
AVERAGE 63  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 66 1980  
MINIMUM TEMPERATURE (F) 26 7 2002  
1989  
 
 
SUNRISE AND SUNSET  
DECEMBER 9 2018......SUNRISE 714 AM EST SUNSET 434 PM EST  
DECEMBER 10 2018......SUNRISE 715 AM EST SUNSET 434 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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