327  
CDUS41 KLWX 232123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
423 PM EST TUE JAN 23 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 23 2024
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 48 3:34 PM 72 1967 43 5 47  
MINIMUM 20 7:23 AM -4 1970 25 -5 37  
1978  
AVERAGE 34 34 0 42  
 
PRECIPITATION (IN)  
TODAY 0.00 1.88 2016 0.10 -0.10 0.12  
MONTH TO DATE 4.31 2.18 2.13 0.78  
SINCE DEC 1 10.06 5.48 4.58 5.73  
SINCE JAN 1 4.31 2.18 2.13 0.78  
 
SNOWFALL (IN)  
TODAY 0.0 22.1 2016 0.3 -0.3 0.0  
MONTH TO DATE 9.5 4.7 4.8 T  
SINCE DEC 1 10.0 7.5 2.5 T  
SINCE JUL 1 10.0 7.8 2.2 T  
SNOW DEPTH 3  
 
DEGREE DAYS  
HEATING  
TODAY 31 31 0 23  
MONTH TO DATE 724 709 15 513  
SINCE DEC 1 1399 1554 -155 1375  
SINCE JUL 1 2170 2454 -284 2209  
 
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 8 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 0.9  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 6:00 AM  
LOWEST 34 4:00 PM  
AVERAGE 56  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 73 1967  
MINIMUM TEMPERATURE (F) 25 -2 1987  
 
SUNRISE AND SUNSET  
JANUARY 23 2024.......SUNRISE 7:23 AM EST SUNSET 5:20 PM EST  
JANUARY 24 2024.......SUNRISE 7:23 AM EST SUNSET 5:21 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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