974  
CDUS41 KLWX 120536  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1236 AM EST FRI JAN 12 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 11 2024  
 
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)  
YESTERDAY  
MAXIMUM 54 3:35 PM 71 1975 42 12 45  
MINIMUM 28 7:49 AM -5 1988 25 3 23  
AVERAGE 41 34 7 34  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.90 1991 0.10 -0.10 0.03  
MONTH TO DATE 2.74 1.03 1.71 0.03  
SINCE DEC 1 8.49 4.33 4.16 4.98  
SINCE JAN 1 2.74 1.03 1.71 0.03  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.2 1991 0.2 -0.2 0.0  
MONTH TO DATE T 1.7 -1.7 0.0  
SINCE DEC 1 0.5 4.5 -4.0 T  
SINCE JUL 1 0.5 4.8 -4.3 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 31 -7 31  
MONTH TO DATE 280 337 -57 221  
SINCE DEC 1 955 1182 -227 1083  
SINCE JUL 1 1726 2082 -356 1917  
 
COOLING  
YESTERDAY 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 17 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 6.0  
 
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 8:00 AM  
LOWEST 38 3:00 PM  
AVERAGE 62  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 70 2017  
2018  
MINIMUM TEMPERATURE (F) 25 -4 1977  
 
SUNRISE AND SUNSET  
JANUARY 12 2024.......SUNRISE 7:28 AM EST SUNSET 5:08 PM EST  
JANUARY 13 2024.......SUNRISE 7:28 AM EST SUNSET 5:09 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab VA Page
The Nexlab MD Page
The Nexlab WV Page
Main Text Page