700  
CDUS41 KLWX 120531  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1230 AM EST MON NOV 12 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 11 2018
 
 
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)  
YESTERDAY  
MAXIMUM 46 336 PM 78 2006 60 -14 37  
MINIMUM 25 416 AM 16 1973 37 -12 21  
AVERAGE 36 48 -12 29  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.16 1995 0.10 -0.10 0.00  
MONTH TO DATE 3.29 1.25 2.04 1.66  
SINCE SEP 1 13.33 8.42 4.91 6.56  
SINCE JAN 1 56.59 36.42 20.17 39.56  
 
SNOWFALL (IN)  
YESTERDAY 0.0 5.3 1987 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1  
SINCE JUL 1 0.0 0.1 -0.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 29 17 12 36  
MONTH TO DATE 168 170 -2 172  
SINCE SEP 1 464 524 -60 392  
SINCE JUL 1 464 526 -62 393  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE SEP 1 338 160 178 220  
SINCE JAN 1 1522 1176 346 1281    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 3.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 900 PM  
LOWEST 37 300 PM  
AVERAGE 61  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 59 74 1964  
MINIMUM TEMPERATURE (F) 36 22 1988  
1973  
 
 
SUNRISE AND SUNSET  
NOVEMBER 12 2018......SUNRISE 649 AM EST SUNSET 458 PM EST  
NOVEMBER 13 2018......SUNRISE 650 AM EST SUNSET 457 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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