322  
CDUS41 KLWX 242135  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
434 PM EST THU JAN 24 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 24 2019
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 59 939 AM 73 1967 43 16 44  
MINIMUM 40 359 PM -2 1987 24 16 31  
AVERAGE 50 33 17 38  
 
PRECIPITATION (IN)  
TODAY 1.33R 1.18 1979 0.09 1.24 T  
MONTH TO DATE 3.69 2.04 1.65 1.68  
SINCE DEC 1 9.45 5.00 4.45 2.45  
SINCE JAN 1 3.69 2.04 1.65 1.68  
 
SNOWFALL (IN)  
TODAY 0.0 2.5 1977 0.3 -0.3  
MONTH TO DATE 12.4 5.3 7.1  
SINCE JUL 1 15.4 9.3 6.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 15 32 -17 27  
MONTH TO DATE 727 768 -41 803  
SINCE DEC 1 1531 1650 -119 1726  
SINCE JUL 1 2489 2566 -77 2520  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 37 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 13.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 200 AM  
LOWEST 65 300 PM  
AVERAGE 83  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 73 1967  
MINIMUM TEMPERATURE (F) 24 -5 1987  
 
 
SUNRISE AND SUNSET  
JANUARY 24 2019.......SUNRISE 722 AM EST SUNSET 522 PM EST  
JANUARY 25 2019.......SUNRISE 722 AM EST SUNSET 523 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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