340  
CDUS43 KLSX 212240  
CLISTL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ST LOUIS MO  
540 PM CDT TUE AUG 21 2018  
 
   
...............................
 
 
   
..THE ST. LOUIS CLIMATE SUMMARY FOR AUGUST 21 2018
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1874 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 82 354 PM 104 2003 88 -6 93  
MINIMUM 69 855 AM 50 1950 69 0 78  
1940  
AVERAGE 76 78 -2 86  
 
PRECIPITATION (IN)  
TODAY 0.02 2.07 1944 0.09 -0.07 T  
MONTH TO DATE 2.91 2.08 0.83 2.18  
SINCE JUN 1 8.00 10.47 -2.47 6.28  
SINCE JAN 1 28.93 26.84 2.09 29.18  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2015 0.0 0.0 0.0  
MONTH TO DATE T 0.0 0.0 0.0  
SINCE JUN 1 T 0.0 0.0 0.0  
SINCE JUL 1 T 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 JUN 1 0 5 -5 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 11 13 -2 21  
MONTH TO DATE 325 301 24 258  
SINCE JUN 1 1276 1102 174 1270  
SINCE JAN 1 1619 1276 343 1522    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 11.4  
 
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 300 AM  
LOWEST 58 200 PM  
AVERAGE 79  
   
......................................................
 
 
 
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 103 1936  
MINIMUM TEMPERATURE (F) 69 55 1950  
1875  
 
 
SUNRISE AND SUNSET  
AUGUST 21 2018........SUNRISE 621 AM CDT SUNSET 748 PM CDT  
AUGUST 22 2018........SUNRISE 622 AM CDT SUNSET 746 PM CDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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