622  
CDUS41 KLWX 222124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
423 PM EST SAT DEC 22 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 22 2018
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 50 106 PM 71 2013 44 6 52  
MINIMUM 41 1247 AM 2 1989 26 15 32  
AVERAGE 46 35 11 42  
 
PRECIPITATION (IN)  
TODAY 0.03 1.12 2011 0.09 -0.06 0.01  
MONTH TO DATE 4.12 2.21 1.91 0.40  
SINCE DEC 1 4.12 2.21 1.91 0.40  
SINCE JAN 1 65.10 40.79 24.31 40.29  
 
SNOWFALL (IN)  
TODAY 0.0 3.3 1962 0.1 -0.1  
MONTH TO DATE T 2.2 -2.2  
SINCE JUL 1 3.0 2.7 0.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 19 30 -11 23  
MONTH TO DATE 569 604 -35 595  
SINCE DEC 1 569 604 -35 595  
SINCE JUL 1 1527 1520 7 1389  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1522 1178 344 1281    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 18.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 100 AM  
LOWEST 56 1000 AM  
AVERAGE 69  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 68 1990  
MINIMUM TEMPERATURE (F) 25 4 1989  
 
 
SUNRISE AND SUNSET  
DECEMBER 22 2018......SUNRISE 725 AM EST SUNSET 451 PM EST  
DECEMBER 23 2018......SUNRISE 726 AM EST SUNSET 452 PM EST  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab VA Page
The Nexlab MD Page
The Nexlab WV Page Main Text Page