917  
CDUS43 KLSX 202237  
CLISTL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ST LOUIS MO  
435 PM CST TUE FEB 20 2018  
 
   
...............................
 
 
   
..THE ST. LOUIS CLIMATE SUMMARY FOR FEBRUARY 20 2018
 
 
VALID TODAY AS OF 0400 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 69 720 AM 79 2017 47 22 79  
MINIMUM 57 259 PM -4 1885 29 28 52  
AVERAGE 63 38 25 66  
 
PRECIPITATION (IN)  
TODAY 0.09 2.75 1882 0.07 0.02 T  
MONTH TO DATE 1.51 1.59 -0.08 0.04  
SINCE DEC 1 3.58 6.83 -3.25 2.97  
SINCE JAN 1 2.74 3.99 -1.25 1.84  
 
SNOWFALL (IN)  
TODAY 0.0 9.5 1912 0.2 -0.2 0.0  
MONTH TO DATE 0.8 3.2 -2.4 0.2  
SINCE DEC 1 5.5 13.2 -7.7 1.4  
SINCE JUL 1 5.5 13.9 -8.4 1.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 2 27 -25 0  
MONTH TO DATE 583 598 -15 386  
SINCE DEC 1 2602 2566 36 2147  
SINCE JUL 1 3304 3392 -88 2638  
 
COOLING  
TODAY 0 0 0 1  
MONTH TO DATE 0 0 0 1  
SINCE DEC 1 0 0 0 1  
SINCE JAN 1 0 0 0 1    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 17.4  
 
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 400 PM  
LOWEST 66 400 AM  
AVERAGE 81  
   
......................................................
 
 
 
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 47 79 1935  
MINIMUM TEMPERATURE (F) 29 -1 1885  
 
 
SUNRISE AND SUNSET  
FEBRUARY 20 2018......SUNRISE 646 AM CST SUNSET 545 PM CST  
FEBRUARY 21 2018......SUNRISE 645 AM CST SUNSET 546 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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