965  
CDUS41 KLWX 200528  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1224 AM EST TUE NOV 20 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 19 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 61 239 PM 76 1985 56 5 60  
MINIMUM 34 735 AM 13 2014 35 -1 40  
AVERAGE 48 45 3 50  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.93 2003 0.12 -0.12 0.09  
MONTH TO DATE 5.87 2.15 3.72 1.96  
SINCE SEP 1 15.91 9.32 6.59 6.86  
SINCE JAN 1 59.17 37.32 21.85 39.86  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2016 0.0 0.0  
1984  
1969  
MONTH TO DATE 3.0 0.1 2.9  
SINCE JUL 1 3.0 0.1 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 17 20 -3 15  
MONTH TO DATE 365 318 47 342  
SINCE SEP 1 661 672 -11 562  
SINCE JUL 1 661 674 -13 563  
 
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 13 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 4.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 400 AM  
LOWEST 51 300 PM  
AVERAGE 76  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 79 1985  
MINIMUM TEMPERATURE (F) 34 18 1980  
 
 
SUNRISE AND SUNSET  
NOVEMBER 20 2018......SUNRISE 658 AM EST SUNSET 452 PM EST  
NOVEMBER 21 2018......SUNRISE 659 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.  
 

 
 
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