772  
CDUS43 KLSX 212227  
CLISTL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ST LOUIS MO  
527 PM CDT MON AUG 21 2017  
 
   
...............................
 
 
   
..THE ST. LOUIS CLIMATE SUMMARY FOR AUGUST 21 2017
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1874 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 93 1126 AM 104 2003 88 5 82  
MINIMUM 78 608 AM 50 1950 69 9 63  
1940  
AVERAGE 86 78 8 73  
 
PRECIPITATION (IN)  
TODAY 0.00 2.07 1944 0.09 -0.09 0.00  
MONTH TO DATE 2.18 2.08 0.10 5.21  
SINCE JUN 1 6.28 10.47 -4.19 14.87  
SINCE JAN 1 29.18 26.84 2.34 27.92  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2015 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 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 JUN 1 0 5 -5 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 21 13 8 8  
MONTH TO DATE 258 301 -43 330  
SINCE JUN 1 1270 1102 168 1347  
SINCE JAN 1 1522 1276 246 1541    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 7.4  
 
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 200 AM  
LOWEST 60 1100 AM  
AVERAGE 73  
   
......................................................
 
 
 
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 2017........SUNRISE 621 AM CDT SUNSET 747 PM CDT  
AUGUST 22 2017........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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