318  
CDUS41 KLWX 050531  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1231 AM EST FRI MAR 05 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 4 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 54 2:59 PM 79 1974 51 3 65  
1983  
MINIMUM 32 11:59 PM -1 2014 29 3 40  
AVERAGE 43 40 3 53  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.16 1993 0.09 -0.09 T  
MONTH TO DATE 0.18 0.37 -0.19 0.07  
SINCE MAR 1 0.18 0.37 -0.19 0.07  
SINCE JAN 1 6.34 5.79 0.55 6.64  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.6 1971 0.1 -0.1 0.0  
2016  
MONTH TO DATE 0.0 0.6 -0.6 0.0  
SINCE MAR 1 0.0 0.6 -0.6 0.0  
SINCE JUL 1 12.0 19.5 -7.5 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 22 25 -3 12  
MONTH TO DATE 93 101 -8 68  
SINCE MAR 1 93 101 -8 68  
SINCE JUL 1 3286 3691 -405 3212  
 
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 28 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 14.1  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 62 2:00 AM  
LOWEST 33 3:00 PM  
AVERAGE 48  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 52 79 1976  
MINIMUM TEMPERATURE (F) 30 7 1978  
 
SUNRISE AND SUNSET  
MARCH 5 2021.........SUNRISE 6:36 AM EST SUNSET 6:07 PM EST  
MARCH 6 2021.........SUNRISE 6:34 AM EST SUNSET 6:08 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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