586  
CDUS41 KLWX 080534  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1234 AM EST MON MAR 08 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 7 2021
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 47 4:06 PM 76 1974 52 -5 52  
MINIMUM 18 6:56 AM 2 2015 30 -12 35  
AVERAGE 33 41 -8 44  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.53 1967 0.10 -0.10 0.00  
MONTH TO DATE 0.18 0.66 -0.48 0.13  
SINCE MAR 1 0.18 0.66 -0.48 0.13  
SINCE JAN 1 6.34 6.08 0.26 6.70  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.3 1969 0.2 -0.2 0.0  
MONTH TO DATE 0.0 1.0 -1.0 0.0  
SINCE MAR 1 0.0 1.0 -1.0 0.0  
SINCE JUL 1 12.0 19.9 -7.9 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 24 8 21  
MONTH TO DATE 185 173 12 136  
SINCE MAR 1 185 173 12 136  
SINCE JUL 1 3378 3763 -385 3280  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 5.2  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 7:00 AM  
LOWEST 25 5:00 PM  
AVERAGE 55  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 53 84 2000  
MINIMUM TEMPERATURE (F) 31 11 1986  
2007  
 
SUNRISE AND SUNSET  
MARCH 8 2021.........SUNRISE 6:31 AM EST SUNSET 6:10 PM EST  
MARCH 9 2021.........SUNRISE 6:30 AM EST SUNSET 6:11 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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