719  
CDUS41 KPHI 170600  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
1259 AM EST MON DEC 17 2018  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 16 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 46 1234 AM 60 1971 40 6 40  
MINIMUM 36 628 PM 1 1951 24 12 14  
AVERAGE 41 32 9 27  
 
PRECIPITATION (IN)  
YESTERDAY 1.21 1.30 2005 0.12 1.09 0.00  
MONTH TO DATE 2.28 2.04 0.24 0.70  
SINCE DEC 1 2.28 2.04 0.24 0.70  
SINCE JAN 1 63.00 43.81 19.19 49.00  
 
SNOWFALL (IN)  
YESTERDAY T 4.5 1973 0.2 -0.2 0.0  
MONTH TO DATE T 2.2 -2.2 7.9  
SINCE DEC 1 T 2.2 -2.2 7.9  
SINCE JUL 1 8.1 2.9 5.2 7.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 33 -9 38  
MONTH TO DATE 473 489 -16 510  
SINCE DEC 1 473 489 -16 510  
SINCE JUL 1 1536 1669 -133 1423  
 
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 23 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 11.5  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
LIGHT SNOW  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 400 AM  
LOWEST 65 1200 AM  
AVERAGE 75  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 40 63 2000  
MINIMUM TEMPERATURE (F) 24 -2 1951  
 
 
SUNRISE AND SUNSET  
DECEMBER 17 2018......SUNRISE 720 AM EST SUNSET 436 PM EST  
DECEMBER 18 2018......SUNRISE 720 AM EST SUNSET 436 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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