992  
CDUS41 KLWX 100521  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
121 AM EDT TUE SEP 10 2024  
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 9 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 80 2:53 PM 98 1872 83 -3 88  
MINIMUM 56 5:58 AM 48 1901 67 -11 70  
AVERAGE 68 75 -7 79  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.59 2018 0.13 -0.13 0.78  
MONTH TO DATE 0.02 1.15 -1.13 1.15  
SINCE SEP 1 0.02 1.15 -1.13 1.15  
SINCE JAN 1 29.11 29.06 0.05 23.64  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 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  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 3 10 -7 14  
MONTH TO DATE 54 99 -45 156  
SINCE SEP 1 54 99 -45 156  
SINCE JAN 1 1769 1551 218 1493    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 3.7  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 3:00 AM  
LOWEST 24 3:00 PM  
AVERAGE 49  
   
......................................................
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 98 1983  
MINIMUM TEMPERATURE (F) 66 44 1883  
 
SUNRISE AND SUNSET  
SEPTEMBER 10 2024.....SUNRISE 6:46 AM EDT SUNSET 7:23 PM EDT  
SEPTEMBER 11 2024.....SUNRISE 6:46 AM EDT SUNSET 7:22 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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