157  
CDUS41 KLWX 172128  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
528 PM EDT TUE SEP 17 2024  
   
...............................  
 
...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 17 2024...  
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 81 10:57 AM 96 1991 80 1 77  
MINIMUM 69 2:22 AM 44 1923 64 5 62  
AVERAGE 75 72 3 70  
 
PRECIPITATION (IN)  
TODAY 0.07 3.26 1876 0.14 -0.07 0.03  
MONTH TO DATE 0.09 2.24 -2.15 1.33  
SINCE SEP 1 0.09 2.24 -2.15 1.33  
SINCE JAN 1 29.18 30.15 -0.97 23.82  
 
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 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  
TODAY 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  
TODAY 10 8 2 5  
MONTH TO DATE 128 168 -40 232  
SINCE SEP 1 128 168 -40 232  
SINCE JAN 1 1843 1620 223 1569    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 12.8  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 4:00 AM  
LOWEST 62 12:00 PM  
AVERAGE 75  
   
......................................................  
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 91 1898  
1921  
1927  
MINIMUM TEMPERATURE (F) 63 45 1937  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2024.....SUNRISE 6:52 AM EDT SUNSET 7:12 PM EDT  
SEPTEMBER 18 2024.....SUNRISE 6:53 AM EDT SUNSET 7:11 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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