910  
CDUS41 KLWX 102132  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
532 PM EDT WED OCT 10 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 10 2018
 
 
VALID TODAY AS OF 0500 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 83 106 PM 87 2017 70 13 87  
MINIMUM 69 529 AM 31 1978 46 23 64  
1972  
AVERAGE 76 58 18 76  
 
PRECIPITATION (IN)  
TODAY 0.01 2.22 2013 0.11 -0.10 0.00  
MONTH TO DATE 0.01 1.06 -1.05 0.61  
SINCE SEP 1 7.37 4.98 2.39 2.36  
SINCE JAN 1 50.63 32.98 17.65 35.36  
 
SNOWFALL (IN)  
TODAY 0.0 1.3 1979 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 8 -8 0  
MONTH TO DATE 0 66 -66 25  
SINCE SEP 1 13 122 -109 65  
SINCE JUL 1 13 124 -111 66  
 
COOLING  
TODAY 11 1 10 11  
MONTH TO DATE 90 12 78 52  
SINCE SEP 1 331 153 178 207  
SINCE JAN 1 1515 1169 346 1268    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 6.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 65 200 PM  
AVERAGE 83  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 86 2010  
MINIMUM TEMPERATURE (F) 45 28 1972  
 
 
SUNRISE AND SUNSET  
OCTOBER 10 2018.......SUNRISE 714 AM EDT SUNSET 639 PM EDT  
OCTOBER 11 2018.......SUNRISE 715 AM EDT SUNSET 637 PM EDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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