923  
CDUS41 KPHI 140556  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
1255 AM EST THU DEC 14 2017  
 
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 13 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1922 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 31 144 PM 68 2015 41 -10 41  
MINIMUM 19 545 AM 5 1995 25 -6 25  
1988  
1960  
AVERAGE 25 33 -8 33  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 1.48 1996 0.12 -0.06 0.00  
MONTH TO DATE 0.59 1.69 -1.10 1.37  
SINCE DEC 1 0.59 1.69 -1.10 1.37  
SINCE JAN 1 48.89 43.46 5.43 35.76  
 
SNOWFALL (IN)  
YESTERDAY 0.3 7.2 1966 0.2 0.1 0.0  
MONTH TO DATE 5.2 1.7 3.5 T  
SINCE DEC 1 5.2 1.7 3.5 T  
SINCE JUL 1 5.2 2.4 2.8 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 40 32 8 32  
MONTH TO DATE 383 391 -8 368  
SINCE DEC 1 383 391 -8 368  
SINCE JUL 1 1296 1571 -275 1273  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1004 757 247 1223    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 13.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 51 500 AM  
LOWEST 35 400 PM  
AVERAGE 43  
   
......................................................
 
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 41 68 2015  
MINIMUM TEMPERATURE (F) 24 -2 2005  
 
 
SUNRISE AND SUNSET  
DECEMBER 14 2017......SUNRISE 718 AM EST SUNSET 435 PM EST  
DECEMBER 15 2017......SUNRISE 719 AM EST SUNSET 435 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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