397  
CDUS41 KLWX 290524  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT FRI SEP 29 2023  
   
...............................
 
 
...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 28 2023...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 70 3:39 PM 91 1886 76 -6 73  
MINIMUM 55 5:52 AM 42 1897 60 -5 51  
1918  
1947  
AVERAGE 63 68 -5 62  
 
PRECIPITATION (IN)  
YESTERDAY T 2.46 2004 0.13 -0.13 0.00  
MONTH TO DATE 3.60 3.66 -0.06 1.95  
SINCE SEP 1 3.60 3.66 -0.06 1.95  
SINCE JAN 1 26.09 31.57 -5.48 33.90  
 
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 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 2 0 3  
MONTH TO DATE 9 10 -1 10  
SINCE SEP 1 9 10 -1 10  
SINCE JUL 1 9 10 -1 10  
 
COOLING  
YESTERDAY 0 4 -4 0  
MONTH TO DATE 261 230 31 258  
SINCE SEP 1 261 230 31 258  
SINCE JAN 1 1627 1682 -55 1766    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 9.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 6:00 AM  
LOWEST 66 12:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 93 1954  
MINIMUM TEMPERATURE (F) 59 40 1942  
 
SUNRISE AND SUNSET  
SEPTEMBER 29 2023.....SUNRISE 7:02 AM EDT SUNSET 6:54 PM EDT  
SEPTEMBER 30 2023.....SUNRISE 7:03 AM EDT SUNSET 6:53 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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