122  
CDUS41 KLWX 270525  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT SAT OCT 27 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 26 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 48 304 PM 82 1978 65 -17 59  
MINIMUM 37 529 AM 26 1988 41 -4 37  
1987  
1972  
AVERAGE 43 53 -10 48  
 
PRECIPITATION (IN)  
YESTERDAY 0.76 1.76 1977 0.11 0.65 T  
MONTH TO DATE 2.04 2.71 -0.67 2.01  
SINCE SEP 1 9.40 6.63 2.77 3.76  
SINCE JAN 1 52.66 34.63 18.03 36.76  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 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  
YESTERDAY 22 12 10 17  
MONTH TO DATE 212 231 -19 119  
SINCE SEP 1 225 287 -62 159  
SINCE JUL 1 225 289 -64 160  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 97 16 81 64  
SINCE SEP 1 338 157 181 219  
SINCE JAN 1 1522 1173 349 1280    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 6.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 700 PM  
LOWEST 76 900 AM  
AVERAGE 88  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 84 1963  
MINIMUM TEMPERATURE (F) 40 21 1988  
 
 
SUNRISE AND SUNSET  
OCTOBER 27 2018.......SUNRISE 732 AM EDT SUNSET 615 PM EDT  
OCTOBER 28 2018.......SUNRISE 733 AM EDT SUNSET 614 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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