887  
CDUS43 KLSX 172238  
CLISTL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ST LOUIS MO  
438 PM CST SUN DEC 17 2023  
   
...............................  
 
   
..THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 17 2023  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1874 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 46 359 PM 72 1908 44 2 34  
MINIMUM 42 136 PM -3 1875 28 14 24  
AVERAGE 44 36 8 29  
 
PRECIPITATION (IN)  
TODAY 0.00 1.02 1897 0.08 -0.08 0.00  
1959  
MONTH TO DATE 1.14 1.33 -0.19 1.46  
SINCE DEC 1 1.14 1.33 -0.19 1.46  
SINCE JAN 1 31.99 40.53 -8.54 48.44  
 
SNOWFALL (IN)  
TODAY 0.0 2.0 1897 0.1 -0.1 0.0  
MONTH TO DATE 0.0 1.4 -1.4 T  
SINCE DEC 1 0.0 1.4 -1.4 T  
SINCE JUL 1 0.0 2.3 -2.3 0.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 21 29 -8 36  
MONTH TO DATE 320 455 -135 405  
SINCE DEC 1 320 455 -135 405  
SINCE JUL 1 972 1277 -305 1198  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1942 1713 229 1977    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 10.0  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 500 AM  
LOWEST 63 400 PM  
AVERAGE 73  
   
......................................................  
 
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 69 1877  
1939  
MINIMUM TEMPERATURE (F) 28 -4 1884  
1983  
 
SUNRISE AND SUNSET  
DECEMBER 17 2023......SUNRISE 714 AM CST SUNSET 442 PM CST  
DECEMBER 18 2023......SUNRISE 714 AM CST SUNSET 442 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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