794  
CXUS53 KFSD 011759 RRA  
CLMMHE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
1256 PM CDT TUE JUN 01 2021  
   
...............................
 
 
   
..THE MITCHELL SD CLIMATE SUMMARY FOR THE MONTH OF MAY 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 108 05/30/1934  
LOW 18 05/03/1967  
HIGHEST 92 05/01 MM MM 85 05/01  
LOWEST 31 05/04 MM MM 29 05/11  
05/06  
05/11  
AVG. MAXIMUM 71.3 70.8 0.5 67.5  
AVG. MINIMUM 47.8 47.8 -0.0 48.3  
MEAN 59.5 59.3 0.2 57.9  
DAYS MAX >= 90 1 1.2 -0.2 0  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 3 1.5 1.5 3  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 10.58 1942  
MINIMUM 0.11 1940  
TOTALS 1.75 3.15 -1.40 1.79  
DAILY AVG. 0.06 0.10 -0.04 0.06  
DAYS >= .01 10 10.8 -0.8 6  
DAYS >= .10 4 5.7 -1.7 4  
DAYS >= .50 1 2.1 -1.1 2  
DAYS >= 1.00 0 0.6 -0.6 0  
GREATEST  
24 HR. TOTAL 0.67 05/26 TO 05/27  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 2.5 1905  
TOTALS 0.0 MM MM 0.0  
SINCE 7/1 30.0 MM MM MM  
SNOWDEPTH AVG. 0 0  
DAYS >= 1.0 0 MM MM 0  
GREATEST  
SNOW DEPTH 0 0 MM  
24 HR TOTAL MM  
 
DEGREE DAYS  
HEATING TOTAL 217 220 -3 236  
SINCE 7/1 6616 7126 -510 MM  
COOLING TOTAL 58 43 15 22  
SINCE 1/1 64 46 18 MM    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 10.7  
HIGHEST WIND SPEED/DIRECTION 37/360 DATE 05/03  
HIGHEST GUST SPEED/DIRECTION 49/160 DATE 05/13  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.40  
NUMBER OF DAYS FAIR 14  
NUMBER OF DAYS PC 13  
NUMBER OF DAYS CLOUDY 4  
 
AVERAGE RH (PERCENT) 63  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 6 MIXED PRECIP 0  
HEAVY RAIN 2 RAIN 5  
LIGHT RAIN 16 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 0 SLEET 0  
FOG 13 FOG W/VIS <= 1/4 MILE 1  
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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