722  
CDUS41 KPHI 200554  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
1254 AM EST THU DEC 20 2018  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 19 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 45 316 PM 59 1957 39 6 57  
MINIMUM 20 528 AM 0 1951 23 -3 40  
AVERAGE 33 31 2 49  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.93 2008 0.11 -0.11 T  
MONTH TO DATE 2.28 2.36 -0.08 0.70  
SINCE DEC 1 2.28 2.36 -0.08 0.70  
SINCE JAN 1 63.00 44.13 18.87 49.00  
 
SNOWFALL (IN)  
YESTERDAY 0.0 8.6 1995 0.2 -0.2 0.0  
MONTH TO DATE T 2.7 -2.7 7.9  
SINCE DEC 1 T 2.7 -2.7 7.9  
SINCE JUL 1 8.1 3.4 4.7 7.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 34 -2 16  
MONTH TO DATE 562 590 -28 581  
SINCE DEC 1 562 590 -28 581  
SINCE JUL 1 1625 1770 -145 1494  
 
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 13 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 2.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 1100 PM  
LOWEST 41 200 PM  
AVERAGE 61  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 39 63 1957  
MINIMUM TEMPERATURE (F) 23 -2 1951  
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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