719  
CDUS41 KPHI 202129  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
427 PM EST THU DEC 20 2018  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 20 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 40 138 PM 63 1957 39 1 50  
MINIMUM 23 730 AM -2 1951 23 0 30  
1942  
AVERAGE 32 31 1 40  
 
PRECIPITATION (IN)  
TODAY 0.10 2.19 1957 0.11 -0.01 0.00  
MONTH TO DATE 2.38 2.47 -0.09 0.70  
SINCE DEC 1 2.38 2.47 -0.09 0.70  
SINCE JAN 1 63.10 44.24 18.86 49.00  
 
SNOWFALL (IN)  
TODAY 0.0 6.2 1966 0.2 -0.2 0.0  
MONTH TO DATE T 2.9 -2.9 7.9  
SINCE DEC 1 T 2.9 -2.9 7.9  
SINCE JUL 1 8.1 3.6 4.5 7.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 33 34 -1 25  
MONTH TO DATE 595 624 -29 606  
SINCE DEC 1 595 624 -29 606  
SINCE JUL 1 1658 1804 -146 1519  
 
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 10 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 2.5  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 300 PM  
LOWEST 64 100 PM  
AVERAGE 75  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 39 57 1957  
MINIMUM TEMPERATURE (F) 23 -3 1942  
 
 
SUNRISE AND SUNSET  
DECEMBER 20 2018......SUNRISE 721 AM EST SUNSET 437 PM EST  
DECEMBER 21 2018......SUNRISE 722 AM EST SUNSET 438 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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