129  
CDUS41 KLWX 012128  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
528 PM EDT THU APR 01 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 1 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 49 1:31 PM 85 1978 62 -13 56  
MINIMUM 39 5:07 AM 17 1969 38 1 40  
AVERAGE 44 50 -6 48  
 
PRECIPITATION (IN)  
TODAY 0.27 1.64 1973 0.12 0.15 T  
MONTH TO DATE 0.27 0.12 0.15 T  
SINCE MAR 1 2.54 3.50 -0.96 1.99  
SINCE JAN 1 8.70 8.92 -0.22 8.56  
 
SNOWFALL (IN)  
TODAY T 0.6 1964 0.0 0.0 0.0  
MONTH TO DATE T 0.0 0.0 0.0  
SINCE MAR 1 T 2.8 -2.8 T  
SINCE JUL 1 12.0 21.7 -9.7 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 21 16 5 17  
MONTH TO DATE 21 16 5 17  
SINCE MAR 1 536 663 -127 465  
SINCE JUL 1 3729 4253 -524 3609  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 4 3 1 3  
SINCE JAN 1 4 3 1 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 17.8  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 5:00 AM  
LOWEST 42 1:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 86 1967  
MINIMUM TEMPERATURE (F) 38 21 1964  
 
SUNRISE AND SUNSET  
APRIL 1 2021.........SUNRISE 6:54 AM EDT SUNSET 7:34 PM EDT  
APRIL 2 2021.........SUNRISE 6:52 AM EDT SUNSET 7:35 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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