162  
CDUS41 KLWX 100522  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1222 AM EST THU JAN 10 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 9 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 51 1233 AM 64 2008 42 9 50  
MINIMUM 30 1159 PM -8 1970 24 6 22  
AVERAGE 41 33 8 36  
 
PRECIPITATION (IN)  
YESTERDAY T 1.39 1964 0.08 -0.08 0.00  
MONTH TO DATE 0.25 0.73 -0.48 0.07  
SINCE DEC 1 6.01 3.69 2.32 0.84  
SINCE JAN 1 0.25 0.73 -0.48 0.07  
 
SNOWFALL (IN)  
YESTERDAY T 3.5 1997 0.2 -0.2  
MONTH TO DATE T 1.6 -1.6  
SINCE JUL 1 3.0 5.6 -2.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 32 -8 29  
MONTH TO DATE 203 288 -85 413  
SINCE DEC 1 1007 1170 -163 1336  
SINCE JUL 1 1965 2086 -121 2130  
 
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 33 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 19.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
LIGHT SNOW  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 700 PM  
LOWEST 45 600 AM  
AVERAGE 62  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 59 2016  
MINIMUM TEMPERATURE (F) 24 0 1982  
 
 
SUNRISE AND SUNSET  
JANUARY 10 2019.......SUNRISE 728 AM EST SUNSET 506 PM EST  
JANUARY 11 2019.......SUNRISE 728 AM EST SUNSET 507 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