460  
CDUS41 KLWX 222122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
422 PM EST THU NOV 22 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 22 2018
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 39 149 AM 75 2007 55 -16 56  
MINIMUM 28 729 AM 14 2014 34 -6 34  
1964  
AVERAGE 34 44 -10 45  
 
PRECIPITATION (IN)  
TODAY 0.00 1.54 1991 0.11 -0.11 0.00  
MONTH TO DATE 5.87 2.49 3.38 1.96  
SINCE SEP 1 15.91 9.66 6.25 6.86  
SINCE JAN 1 59.17 37.66 21.51 39.86  
 
SNOWFALL (IN)  
TODAY 0.0 2.2 1989 0.0 0.0  
MONTH TO DATE 3.0 0.2 2.8  
SINCE JUL 1 3.0 0.2 2.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 31 21 10 20  
MONTH TO DATE 442 379 63 402  
SINCE SEP 1 738 733 5 622  
SINCE JUL 1 738 735 3 623  
 
COOLING  
TODAY 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 21 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 13.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 59 100 AM  
LOWEST 39 100 PM  
AVERAGE 49  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 70 1990  
MINIMUM TEMPERATURE (F) 33 14 1984  
1964  
 
 
SUNRISE AND SUNSET  
NOVEMBER 22 2018......SUNRISE 700 AM EST SUNSET 451 PM EST  
NOVEMBER 23 2018......SUNRISE 701 AM EST SUNSET 451 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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