198  
CDUS41 KLWX 090528  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1227 AM EST FRI NOV 9 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 8 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 57 247 PM 77 1987 61 -4 48  
1975  
MINIMUM 44 952 PM 18 1967 37 7 39  
AVERAGE 51 49 2 44  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.14 1996 0.11 -0.11 0.00  
MONTH TO DATE 2.82 0.93 1.89 1.62  
SINCE SEP 1 12.86 8.10 4.76 6.52  
SINCE JAN 1 56.12 36.10 20.02 39.52  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1995 0.0 0.0  
1976  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 16 -2 21  
MONTH TO DATE 94 120 -26 90  
SINCE SEP 1 390 474 -84 310  
SINCE JUL 1 390 476 -86 311  
 
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 17 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 8.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 1200 AM  
LOWEST 43 100 PM  
AVERAGE 60  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 78 1994  
MINIMUM TEMPERATURE (F) 37 19 1976  
1971  
1967  
 
 
SUNRISE AND SUNSET  
NOVEMBER 9 2018......SUNRISE 646 AM EST SUNSET 501 PM EST  
NOVEMBER 10 2018......SUNRISE 647 AM EST SUNSET 500 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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