173  
CDUS41 KLWX 250535  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1230 AM EST FRI JAN 25 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 24 2019
 
 
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)  
YESTERDAY  
MAXIMUM 59 939 AM 73 1967 43 16 44  
MINIMUM 30 1159 PM -2 1987 24 6 31  
AVERAGE 45 33 12 38  
 
PRECIPITATION (IN)  
YESTERDAY 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)  
YESTERDAY 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  
YESTERDAY 20 32 -12 27  
MONTH TO DATE 732 768 -36 803  
SINCE DEC 1 1536 1650 -114 1726  
SINCE JUL 1 2494 2566 -72 2520  
 
COOLING  
YESTERDAY 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 14.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 200 AM  
LOWEST 59 900 PM  
AVERAGE 80  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 73 1967  
MINIMUM TEMPERATURE (F) 24 -5 1987  
 
 
SUNRISE AND SUNSET  
JANUARY 25 2019.......SUNRISE 722 AM EST SUNSET 523 PM EST  
JANUARY 26 2019.......SUNRISE 721 AM EST SUNSET 524 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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