907  
CDUS41 KLWX 210524  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1224 AM EST SUN DEC 21 2014  
 
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 20 2014
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1871 TO 2014  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 39 630 PM 66 1889 45 -6 60  
1877  
MINIMUM 30 702 AM 5 1942 31 -1 44  
AVERAGE 35 38 -3 52  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.56 1957 0.09 -0.09 0.00  
MONTH TO DATE 2.08 2.06 0.02 3.13  
SINCE DEC 1 2.08 2.06 0.02 3.13  
SINCE JAN 1 42.99 38.75 4.24 41.84  
 
SNOWFALL (IN)  
YESTERDAY 0.0 5.0 1892 0.1 -0.1  
MONTH TO DATE T 1.3 -1.3  
SINCE JUL 1 T 1.8 -1.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 30 27 3 13  
MONTH TO DATE 424 480 -56 473  
SINCE DEC 1 424 480 -56 473  
SINCE JUL 1 1031 1175 -144 1181  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1712 1549 163 1719    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 4.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 63 700 AM  
LOWEST 44 400 PM  
AVERAGE 54  
   
......................................................
 
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 72 2013  
MINIMUM TEMPERATURE (F) 31 4 1942  
 
 
SUNRISE AND SUNSET  
DECEMBER 21 2014......SUNRISE 723 AM EST SUNSET 450 PM EST  
DECEMBER 22 2014......SUNRISE 723 AM EST SUNSET 450 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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