204  
CXUS53 KFSD 011750  
CLMFSD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
1247 PM CDT WED SEP 01 2021  
   
...............................
 
 
   
..THE SIOUX FALLS CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
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 109 08/24/1936  
LOW 34 08/20/1950  
08/29/1893  
HIGHEST 91 08/17 MM MM 96 08/23  
08/25  
LOWEST 55 08/13 MM MM 50 08/04  
08/14  
AVG. MAXIMUM 84.6 82.8 1.8 86.7  
AVG. MINIMUM 64.1 61.1 3.0 63.1  
MEAN 74.4 72.0 2.4 74.9  
DAYS MAX >= 90 2 3.5 -1.5 9  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 0 0.0 0.0 0  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 9.33 1932  
MINIMUM 0.36 1907  
TOTALS 6.29 3.34 2.95 1.23  
DAILY AVG. 0.20 0.11 0.09 0.04  
DAYS >= .01 11 9.4 1.6 8  
DAYS >= .10 8 5.4 2.6 5  
DAYS >= .50 2 2.5 -0.5 1  
DAYS >= 1.00 2 1.1 0.9 0  
GREATEST  
24 HR. TOTAL 3.35 08/28 TO 08/28  
 
DEGREE DAYS  
HEATING TOTAL 0 12 -12 0  
SINCE 7/1 0 13 -13 MM  
COOLING TOTAL 300 227 73 315  
SINCE 1/1 1018 750 268 MM    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 9.3  
HIGHEST WIND SPEED/DIRECTION 36/300 DATE 08/28  
HIGHEST GUST SPEED/DIRECTION 55/320 DATE 08/28  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.37  
NUMBER OF DAYS FAIR 15  
NUMBER OF DAYS PC 13  
NUMBER OF DAYS CLOUDY 3  
 
AVERAGE RH (PERCENT) 66  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 12 MIXED PRECIP 0  
HEAVY RAIN 3 RAIN 6  
LIGHT RAIN 13 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 1  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 0 SLEET 0  
FOG 10 FOG W/VIS <= 1/4 MILE 1  
HAZE 3  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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