053  
CDUS41 KPHI 220558  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
1254 AM EST SAT DEC 22 2018  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 21 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 64R 149 PM 57 1957 39 25 41  
MINIMUM 52 1202 AM -3 1942 23 29 25  
AVERAGE 58 31 27 33  
 
PRECIPITATION (IN)  
YESTERDAY 1.14 1.44 2012 0.10 1.04 0.00  
MONTH TO DATE 3.90 2.57 1.33 0.70  
SINCE DEC 1 3.90 2.57 1.33 0.70  
SINCE JAN 1 64.62 44.34 20.28 49.00  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.1 1959 0.1 -0.1 0.0  
MONTH TO DATE T 3.0 -3.0 7.9  
SINCE DEC 1 T 3.0 -3.0 7.9  
SINCE JUL 1 8.1 3.7 4.4 7.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 34 -27 32  
MONTH TO DATE 596 658 -62 638  
SINCE DEC 1 596 658 -62 638  
SINCE JUL 1 1659 1838 -179 1551  
 
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 21 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 8.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 100 AM  
LOWEST 78 300 PM  
AVERAGE 86  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 65 2013  
MINIMUM TEMPERATURE (F) 22 -2 1944  
 
 
SUNRISE AND SUNSET  
DECEMBER 22 2018......SUNRISE 723 AM EST SUNSET 438 PM EST  
DECEMBER 23 2018......SUNRISE 723 AM EST SUNSET 439 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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