319  
CXUS53 KFSD 011914  
CLMFSD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
213 PM CDT SAT MAY 1 2021  
   
...............................
 
 
   
..THE SIOUX FALLS CLIMATE SUMMARY FOR THE MONTH OF APRIL 2021
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1893 TO 2021  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 98 04/28/1910  
LOW 4 04/03/1936  
HIGHEST 90 04/05 MM MM 80 04/22  
LOWEST 16 04/01 MM MM 14 04/04  
AVG. MAXIMUM 60.6 58.5 2.1 59.0  
AVG. MINIMUM 36.4 34.4 2.0 31.6  
MEAN 48.5 46.4 2.1 45.3  
DAYS MAX >= 90 1 0.0 1.0 0  
DAYS MAX <= 32 0 1.0 -1.0 1  
DAYS MIN <= 32 9 12.4 -3.4 16  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 6.97 2001  
MINIMUM 0.02 1926  
TOTALS 2.07 3.01 -0.94 1.15  
DAILY AVG. 0.07 0.10 -0.03 0.04  
DAYS >= .01 10 10.5 -0.5 7  
DAYS >= .10 6 6.1 -0.1 4  
DAYS >= .50 1 1.9 -0.9 1  
DAYS >= 1.00 0 0.6 -0.6 0  
GREATEST  
24 HR. TOTAL 0.96 04/08 TO 04/09  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 31.4 2018  
TOTALS 0.2 4.6 -4.4 5.6  
SINCE 7/1 40.0 44.5 -4.5 MM  
SNOWDEPTH AVG. T 0  
DAYS >= 1.0 0 1.0 -1.0 1  
GREATEST  
SNOW DEPTH T 4 MM  
24 HR TOTAL 0.2 04/20 TO 04/21  
 
DEGREE DAYS  
HEATING TOTAL 492 562 -70 581  
SINCE 7/1 6583 7407 -824 MM  
COOLING TOTAL 6 5 1 0  
SINCE 1/1 6 5 1 MM    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 11.9  
HIGHEST WIND SPEED/DIRECTION 35/310 DATE 04/12  
HIGHEST GUST SPEED/DIRECTION 46/300 DATE 04/12  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.61  
NUMBER OF DAYS FAIR 6  
NUMBER OF DAYS PC 11  
NUMBER OF DAYS CLOUDY 13  
 
AVERAGE RH (PERCENT) 56  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 4 MIXED PRECIP 0  
HEAVY RAIN 2 RAIN 2  
LIGHT RAIN 15 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 1  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 6 SLEET 0  
FOG 10 FOG W/VIS <= 1/4 MILE 0  
HAZE 0  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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