285  
CDUS41 KLWX 040523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST THU MAR 04 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 3 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 61 4:16 PM 74 1967 51 10 64  
MINIMUM 25 5:51 AM 1 2014 29 -4 40  
AVERAGE 43 40 3 52  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.43 1997 0.10 -0.10 0.03  
MONTH TO DATE 0.18 0.28 -0.10 0.07  
SINCE MAR 1 0.18 0.28 -0.10 0.07  
SINCE JAN 1 6.34 5.70 0.64 6.64  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.9 1978 0.2 -0.2 0.0  
2014  
MONTH TO DATE 0.0 0.5 -0.5 0.0  
SINCE MAR 1 0.0 0.5 -0.5 0.0  
SINCE JUL 1 12.0 19.4 -7.4 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 22 25 -3 13  
MONTH TO DATE 71 76 -5 56  
SINCE MAR 1 71 76 -5 56  
SINCE JUL 1 3264 3666 -402 3200  
 
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 (300)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 4.6  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 6:00 AM  
LOWEST 22 3:00 PM  
AVERAGE 50  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 51 79 1974  
1983  
MINIMUM TEMPERATURE (F) 29 -1 2014  
 
SUNRISE AND SUNSET  
MARCH 4 2021.........SUNRISE 6:37 AM EST SUNSET 6:06 PM EST  
MARCH 5 2021.........SUNRISE 6:36 AM EST SUNSET 6:07 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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