299  
CDUS41 KLWX 222127  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
527 PM EDT TUE JUN 22 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 22 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 71 6:07 AM 99 1988 85 -14 88  
MINIMUM 64 11:17 AM 48 1963 64 0 68  
1992  
AVERAGE 68 74 -6 78  
 
PRECIPITATION (IN)  
TODAY 0.31 2.06 2001 0.14 0.17 0.75  
MONTH TO DATE 3.23 3.17 0.06 4.94  
SINCE JUN 1 3.23 3.17 0.06 4.94  
SINCE JAN 1 16.81 20.41 -3.60 21.46  
 
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 12.0 21.0 -9.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 1 11 -10 5  
SINCE JUN 1 1 11 -10 5  
SINCE JUL 1 4153 4603 -450 4154  
 
COOLING  
TODAY 3 10 -7 13  
MONTH TO DATE 208 154 54 177  
SINCE JUN 1 208 154 54 177  
SINCE JAN 1 317 260 57 254    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 5:00 AM  
LOWEST 63 4:00 PM  
AVERAGE 80  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 96 1965  
1988  
MINIMUM TEMPERATURE (F) 64 44 1992  
 
SUNRISE AND SUNSET  
JUNE 22 2021..........SUNRISE 5:45 AM EDT SUNSET 8:39 PM EDT  
JUNE 23 2021..........SUNRISE 5:45 AM EDT SUNSET 8:39 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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