473  
CDUS41 KPHI 252129  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
429 PM EST TUE DEC 25 2018  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 25 2018
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 39 157 PM 65 1964 38 1 35  
MINIMUM 29 1253 AM -2 1983 22 7 24  
AVERAGE 34 30 4 30  
 
PRECIPITATION (IN)  
TODAY 0.00 1.70 1913 0.11 -0.11 0.09  
MONTH TO DATE 4.14 3.00 1.14 1.84  
SINCE DEC 1 4.14 3.00 1.14 1.84  
SINCE JAN 1 64.86 44.77 20.09 50.14  
 
SNOWFALL (IN)  
TODAY 0.0 6.6 2002 0.2 -0.2 T  
MONTH TO DATE T 3.8 -3.8 8.4  
SINCE DEC 1 T 3.8 -3.8 8.4  
SINCE JUL 1 8.1 4.5 3.6 8.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 31 35 -4 35  
MONTH TO DATE 696 798 -102 746  
SINCE DEC 1 696 798 -102 746  
SINCE JUL 1 1759 1978 -219 1659  
 
COOLING  
TODAY 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 NW (320)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 7.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 100 AM  
LOWEST 48 200 PM  
AVERAGE 62  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 65 1964  
MINIMUM TEMPERATURE (F) 21 -3 1980  
 
 
SUNRISE AND SUNSET  
DECEMBER 25 2018......SUNRISE 724 AM EST SUNSET 440 PM EST  
DECEMBER 26 2018......SUNRISE 724 AM EST SUNSET 441 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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