994  
CDUS41 KLWX 010537  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1235 AM EST SAT DEC 1 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 30 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 45 248 PM 72 1991 51 -6 57  
MINIMUM 30 1057 PM 11 1976 31 -1 32  
AVERAGE 38 41 -3 45  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 1.31 2016 0.12 -0.10 0.03  
MONTH TO DATE 7.69 3.41 4.28 1.99  
SINCE SEP 1 17.73 10.58 7.15 6.89  
SINCE JAN 1 60.99 38.58 22.41 39.89  
 
SNOWFALL (IN)  
YESTERDAY 0.0 11.4 1967 0.0 0.0  
MONTH TO DATE 3.0 0.5 2.5  
SINCE JUL 1 3.0 0.5 2.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 27 24 3 20  
MONTH TO DATE 662 559 103 573  
SINCE SEP 1 958 914 44 793  
SINCE JUL 1 958 916 42 794  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 2 -2 1  
SINCE SEP 1 338 162 176 220  
SINCE JAN 1 1522 1178 344 1281    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 2.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 1000 PM  
LOWEST 59 100 AM  
AVERAGE 76  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 51 75 2006  
MINIMUM TEMPERATURE (F) 31 4 1967  
 
 
SUNRISE AND SUNSET  
DECEMBER 1 2018......SUNRISE 709 AM EST SUNSET 448 PM EST  
DECEMBER 2 2018......SUNRISE 710 AM EST SUNSET 448 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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