187  
CDUS43 KLSX 212227  
CLISTL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ST LOUIS MO  
526 PM CDT SAT OCT 21 2017  
 
   
...............................
 
 
   
..THE ST. LOUIS CLIMATE SUMMARY FOR OCTOBER 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 81 302 PM 88 1979 67 14 61  
1947  
MINIMUM 62 554 AM 28 1952 48 14 41  
AVERAGE 72 57 15 51  
 
PRECIPITATION (IN)  
TODAY 0.01 0.76 1949 0.11 -0.10 0.00  
MONTH TO DATE 3.15 2.26 0.89 3.13  
SINCE SEP 1 3.42 5.39 -1.97 8.08  
SINCE JAN 1 33.72 33.14 0.58 36.56  
 
SNOWFALL (IN)  
TODAY 0.0 T 1937 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 9 -9 14  
MONTH TO DATE 41 131 -90 49  
SINCE SEP 1 48 171 -123 53  
SINCE JUL 1 48 172 -124 53  
 
COOLING  
TODAY 7 1 6 0  
MONTH TO DATE 95 35 60 95  
SINCE SEP 1 357 237 120 419  
SINCE JAN 1 1959 1636 323 2124    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 11.9  
 
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 1000 AM  
LOWEST 51 300 PM  
AVERAGE 65  
   
......................................................
 
 
 
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 67 86 1947  
1940  
MINIMUM TEMPERATURE (F) 47 25 1976  
 
 
SUNRISE AND SUNSET  
OCTOBER 21 2017.......SUNRISE 717 AM CDT SUNSET 614 PM CDT  
OCTOBER 22 2017.......SUNRISE 718 AM CDT SUNSET 613 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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