409  
CXUS53 KFSD 011921  
CLMMHE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
221 PM CDT SAT MAY 1 2021  
   
...............................
 
 
   
..THE MITCHELL SD 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 97 04/22/1980  
04/25/1962  
LOW 1 04/01/1924  
HIGHEST 91 04/05 MM MM 79 04/22  
LOWEST 18 04/01 MM MM 18 04/04  
04/14  
AVG. MAXIMUM 60.7 60.2 0.5 58.6  
AVG. MINIMUM 35.4 35.3 0.1 33.6  
MEAN 48.0 47.8 0.2 46.1  
DAYS MAX >= 90 1 0.0 1.0 0  
DAYS MAX <= 32 0 1.0 -1.0 2  
DAYS MIN <= 32 11 10.6 0.4 14  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 7.34 1927  
MINIMUM 0.05 1934  
TOTALS 1.35 2.18 -0.83 0.78  
DAILY AVG. 0.05 0.07 -0.02 0.03  
DAYS >= .01 4 MM MM 7  
DAYS >= .10 2 MM MM 1  
DAYS >= .50 1 MM MM 0  
DAYS >= 1.00 0 MM MM 0  
GREATEST  
24 HR. TOTAL 1.18 04/06 TO 04/07  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 23.2 2013  
TOTALS T MM MM 8.7  
SINCE 7/1 30.0 MM MM MM  
SNOWDEPTH AVG. 0 0  
DAYS >= 1.0 0 MM MM 2  
GREATEST  
SNOW DEPTH 0 3 04/12  
24 HR TOTAL T 04/15 TO 04/15  
04/20 TO 04/20  
04/23 TO 04/23  
 
DEGREE DAYS  
HEATING TOTAL 507 520 -13 561  
SINCE 7/1 6399 6998 -599 MM  
COOLING TOTAL 6 2 4 0  
SINCE 1/1 6 2 4 MM    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 13.3  
HIGHEST WIND SPEED/DIRECTION 36/360 DATE 04/18  
HIGHEST GUST SPEED/DIRECTION 50/290 DATE 04/12  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.42  
NUMBER OF DAYS FAIR 14  
NUMBER OF DAYS PC 9  
NUMBER OF DAYS CLOUDY 7  
 
AVERAGE RH (PERCENT) 57  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 2 MIXED PRECIP 0  
HEAVY RAIN 2 RAIN 3  
LIGHT RAIN 11 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 1 SNOW 1  
LIGHT SNOW 3 SLEET 0  
FOG 7 FOG W/VIS <= 1/4 MILE 1  
HAZE 2  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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