977  
CXUS53 KFSD 011919  
CLMHON  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
219 PM CDT SAT MAY 1 2021  
   
...............................
 
 
   
..THE HURON CLIMATE SUMMARY FOR THE MONTH OF APRIL 2021
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1881 TO 2021  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 97 04/21/1980  
LOW -2 04/03/1975  
HIGHEST 88 04/05 MM MM 78 04/22  
LOWEST 17 04/20 MM MM 16 04/04  
AVG. MAXIMUM 59.4 59.0 0.4 56.9  
AVG. MINIMUM 32.5 34.0 -1.5 31.4  
MEAN 45.9 46.5 -0.6 44.2  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 0 1.0 -1.0 2  
DAYS MIN <= 32 13 12.9 0.1 14  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 6.64 2001  
MINIMUM 0.03 1934  
TOTALS 1.24 2.31 -1.07 0.52  
DAILY AVG. 0.04 0.08 -0.04 0.02  
DAYS >= .01 6 8.7 -2.7 6  
DAYS >= .10 2 4.8 -2.8 2  
DAYS >= .50 1 1.5 -0.5 0  
DAYS >= 1.00 0 0.5 -0.5 0  
GREATEST  
24 HR. TOTAL 1.05 04/06 TO 04/07  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 25.8 1935  
TOTALS T 4.0 -4.0 3.5  
SINCE 7/1 31.7 43.9 -12.2 MM  
SNOWDEPTH AVG. T 0  
DAYS >= 1.0 0 1.0 -1.0 1  
GREATEST  
SNOW DEPTH T 2 04/12  
24 HR TOTAL T 04/13 TO 04/13  
04/15 TO 04/15  
04/20 TO 04/20  
 
DEGREE DAYS  
HEATING TOTAL 565 559 6 620  
SINCE 7/1 6843 7378 -535 MM  
COOLING TOTAL 0 4 -4 0  
SINCE 1/1 0 4 -4 MM    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 12.3  
HIGHEST WIND SPEED/DIRECTION 36/290 DATE 04/11  
HIGHEST GUST SPEED/DIRECTION 47/330 DATE 04/18  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.44  
NUMBER OF DAYS FAIR 13  
NUMBER OF DAYS PC 10  
NUMBER OF DAYS CLOUDY 7  
 
AVERAGE RH (PERCENT) 62  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 1 MIXED PRECIP 0  
HEAVY RAIN 0 RAIN 2  
LIGHT RAIN 11 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 3 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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