654  
CDUS41 KLWX 240523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST TUE NOV 24 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 23 2020
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 57 3:35 AM 70 1990 54 3 42  
MINIMUM 37 11:49 PM 14 1964 33 4 25  
1984  
AVERAGE 47 44 3 34  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 1.25 1992 0.12 -0.06 0.60  
MONTH TO DATE 2.09 2.61 -0.52 1.18  
SINCE SEP 1 7.91 9.78 -1.87 7.56  
SINCE JAN 1 42.13 37.78 4.35 37.40  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.3 1995 0.0 0.0 0.0  
2005  
MONTH TO DATE 0.0 0.2 -0.2 T  
SINCE SEP 1 0.0 0.2 -0.2 T  
SINCE JUL 1 0.0 0.2 -0.2 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 18 21 -3 31  
MONTH TO DATE 291 400 -109 533  
SINCE SEP 1 558 754 -196 718  
SINCE JUL 1 558 756 -198 718  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE SEP 1 154 160 -6 289  
SINCE JAN 1 1406 1176 230 1524    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 13.8  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 2:00 AM  
LOWEST 41 2:00 PM  
AVERAGE 67  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 74 1979  
MINIMUM TEMPERATURE (F) 33 9 1989  
 
SUNRISE AND SUNSET  
NOVEMBER 24 2020......SUNRISE 7:03 AM EST SUNSET 4:50 PM EST  
NOVEMBER 25 2020......SUNRISE 7:04 AM EST SUNSET 4:50 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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