262  
CDUS43 KFSD 180639  
CLIFSD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
139 AM CDT TUE MAY 18 2021  
   
...............................
 
 
   
..THE SIOUX FALLS CLIMATE SUMMARY FOR MAY 17 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1893 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 69 4:23 PM 97 1934 71 -2 62  
MINIMUM 47 5:12 AM 27 1930 48 -1 51  
AVERAGE 58 60 -2 57  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.63 2000 0.13 -0.12 0.31  
MONTH TO DATE 1.01 1.95 -0.94 1.27  
SINCE MAR 1 5.71 6.55 -0.84 4.48  
SINCE JAN 1 7.41 7.98 -0.57 5.46  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE T 0.1 -0.1 0.0  
SINCE MAR 1 8.5 12.4 -3.9 11.9  
SINCE JUL 1 40.0 45.3 -5.3 39.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 7 0 8  
MONTH TO DATE 184 162 22 201  
SINCE MAR 1 1415 1642 -227 1600  
SINCE JUL 1 6767 7151 -384 7089  
 
COOLING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 11 14 -3 8  
SINCE MAR 1 17 20 -3 8  
SINCE JAN 1 17 20 -3 8    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 10.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 6:00 AM  
LOWEST 57 1:00 PM  
AVERAGE 73  
   
......................................................
 
 
THE SIOUX FALLS CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 98 1934  
MINIMUM TEMPERATURE (F) 48 28 1915  
 
SUNRISE AND SUNSET  
MAY 18 2021...........SUNRISE 5:59 AM CDT SUNSET 8:49 PM CDT  
MAY 19 2021...........SUNRISE 5:58 AM CDT SUNSET 8:50 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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