756  
CDUS41 KLWX 220522  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
122 AM EDT MON MAR 22 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 21 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 64 3:52 PM 78 2010 57 7 66  
MINIMUM 26 6:37 AM 14 1965 34 -8 45  
AVERAGE 45 46 -1 56  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.69 2019 0.12 -0.12 T  
MONTH TO DATE 0.59 2.16 -1.57 0.95  
SINCE MAR 1 0.59 2.16 -1.57 0.95  
SINCE JAN 1 6.75 7.58 -0.83 7.52  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.8 2018 0.1 -0.1 0.0  
MONTH TO DATE T 2.3 -2.3 T  
SINCE MAR 1 T 2.3 -2.3 T  
SINCE JUL 1 12.0 21.2 -9.2 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 20 19 1 9  
MONTH TO DATE 417 474 -57 302  
SINCE MAR 1 417 474 -57 302  
SINCE JUL 1 3610 4064 -454 3446  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 3  
SINCE MAR 1 0 0 0 3  
SINCE JAN 1 0 0 0 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 2.2  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 4:00 AM  
LOWEST 18 5:00 PM  
AVERAGE 52  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 83 1968  
MINIMUM TEMPERATURE (F) 35 12 1988  
 
SUNRISE AND SUNSET  
MARCH 22 2021.........SUNRISE 7:10 AM EDT SUNSET 7:24 PM EDT  
MARCH 23 2021.........SUNRISE 7:08 AM EDT SUNSET 7:25 PM EDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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