832  
CDUS41 KLWX 012125  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
425 PM EST FRI JAN 01 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 1 2021
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 39 12:42 AM 68 2005 43 -4 50  
MINIMUM 34 3:59 PM -6 1968 24 10 26  
AVERAGE 37 33 4 38  
 
PRECIPITATION (IN)  
TODAY 0.11 1.73 2003 0.08 0.03 0.00  
MONTH TO DATE 0.11 0.08 0.03 0.00  
SINCE DEC 1 5.92 3.04 2.88 2.97  
SINCE JAN 1 0.11 0.08 0.03 0.00  
 
SNOWFALL (IN)  
TODAY 0.0 6.9 1971 0.2 -0.2 0.0  
MONTH TO DATE 0.0 0.2 -0.2 0.0  
SINCE DEC 1 2.4 3.7 -1.3 0.6  
SINCE JUL 1 2.4 4.2 -1.8 0.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 28 32 -4 27  
MONTH TO DATE 28 32 -4 27  
SINCE DEC 1 830 914 -84 827  
SINCE JUL 1 1497 1830 -333 1690  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 4:00 PM  
LOWEST 62 10:00 AM  
AVERAGE 77  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 67 2000  
MINIMUM TEMPERATURE (F) 24 -7 1968  
 
SUNRISE AND SUNSET  
JANUARY 1 2021.......SUNRISE 7:29 AM EST SUNSET 4:59 PM EST  
JANUARY 2 2021.......SUNRISE 7:29 AM EST SUNSET 5:00 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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