779  
CDUS41 KLWX 242125  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
525 PM EDT SAT JUL 24 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 24 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
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 87 3:10 PM 99 2010 88 -1 84  
MINIMUM 61 4:02 AM 48 1985 67 -6 73  
AVERAGE 74 77 -3 79  
 
PRECIPITATION (IN)  
TODAY 0.00 0.86 2020 0.14 -0.14 0.86  
MONTH TO DATE 2.40 3.27 -0.87 4.33  
SINCE JUN 1 6.05 7.57 -1.52 9.54  
SINCE JAN 1 19.63 24.81 -5.18 26.06  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 6 13 -7 5  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 9 12 -3 14  
MONTH TO DATE 318 286 32 386  
SINCE JUN 1 612 524 88 659  
SINCE JAN 1 721 630 91 736    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 5.0  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 5:00 AM  
LOWEST 53 2:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 100 2016  
MINIMUM TEMPERATURE (F) 67 55 1976  
 
SUNRISE AND SUNSET  
JULY 24 2021..........SUNRISE 6:04 AM EDT SUNSET 8:28 PM EDT  
JULY 25 2021..........SUNRISE 6:05 AM EDT SUNSET 8:27 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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