111  
CDUS41 KLWX 222127  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
427 PM EST SUN NOV 22 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 22 2020
 
 
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 58 1:54 PM 75 2007 55 3 54  
MINIMUM 51 9:14 AM 14 1964 34 17 33  
2014  
AVERAGE 55 44 11 44  
 
PRECIPITATION (IN)  
TODAY 0.00 1.54 1991 0.11 -0.11 0.16  
MONTH TO DATE 2.03 2.49 -0.46 0.58  
SINCE SEP 1 7.85 9.66 -1.81 6.96  
SINCE JAN 1 42.07 37.66 4.41 36.80  
 
SNOWFALL (IN)  
TODAY 0.0 2.2 1989 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.2 -0.2 T  
SINCE SEP 1 0.0 0.2 -0.2 T  
SINCE JUL 1 0.0 0.2 -0.2 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 10 21 -11 21  
MONTH TO DATE 273 379 -106 502  
SINCE SEP 1 540 733 -193 687  
SINCE JUL 1 540 735 -195 687  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE SEP 1 154 160 -6 289  
SINCE JAN 1 1406 1176 230 1524    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 7.0  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 4:00 PM  
LOWEST 57 1:00 AM  
AVERAGE 63  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 70 1990  
MINIMUM TEMPERATURE (F) 33 14 1964  
1984  
 
SUNRISE AND SUNSET  
NOVEMBER 22 2020......SUNRISE 7:01 AM EST SUNSET 4:51 PM EST  
NOVEMBER 23 2020......SUNRISE 7:02 AM EST SUNSET 4:51 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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