418  
CDUS41 KPHI 182127  
CLIPHL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
427 PM EST FRI DEC 18 2020  
   
...............................
 
 
   
..THE PHILADELPHIA PA CLIMATE SUMMARY FOR DECEMBER 18 2020
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1872 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 36 3:13 PM 70 2006 44 -8 39  
MINIMUM 24 4:21 AM 4 1919 29 -5 24  
AVERAGE 30 37 -7 32  
 
PRECIPITATION (IN)  
TODAY 0.00 1.72 1977 0.11 -0.11 T  
MONTH TO DATE 2.51 2.19 0.32 4.22  
SINCE DEC 1 2.51 2.19 0.32 4.22  
SINCE JAN 1 47.89 40.16 7.73 46.44  
 
SNOWFALL (IN)  
TODAY 0.0 6.0 1887 0.1 -0.1 T  
MONTH TO DATE 6.6 1.5 5.1 0.1  
SINCE DEC 1 6.6 1.5 5.1 0.1  
SINCE JUL 1 6.6 1.8 4.8 0.1  
SNOW DEPTH 3  
 
DEGREE DAYS  
HEATING  
TODAY 35 28 7 33  
MONTH TO DATE 454 464 -10 459  
SINCE DEC 1 454 464 -10 459  
SINCE JUL 1 1048 1280 -232 1258  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1521 1301 220 1610    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 8.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 3:00 AM  
LOWEST 54 3:00 PM  
AVERAGE 64  
   
......................................................
 
 
THE PHILADELPHIA PA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 65 1929  
MINIMUM TEMPERATURE (F) 29 4 1884  
 
SUNRISE AND SUNSET  
DECEMBER 18 2020......SUNRISE 7:18 AM EST SUNSET 4:38 PM EST  
DECEMBER 19 2020......SUNRISE 7:18 AM EST SUNSET 4:39 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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