784  
CXUS53 KFSD 011917  
CLMSUX  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
216 PM CDT SAT MAY 1 2021  
   
...............................
 
 
   
..THE SIOUX CITY IA CLIMATE SUMMARY FOR THE MONTH OF APRIL 2021
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1889 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 -2 04/03/1975  
HIGHEST 86 04/04 MM MM 83 04/22  
LOWEST 14 04/01 MM MM 15 04/13  
AVG. MAXIMUM 63.1 62.3 0.8 61.9  
AVG. MINIMUM 36.0 36.8 -0.8 33.6  
MEAN 49.6 49.6 -0.0 47.8  
DAYS MAX >= 90 0 1.0 -1.0 0  
DAYS MAX <= 32 0 0.0 0.0 1  
DAYS MIN <= 32 11 9.7 1.3 13  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 6.73 1984  
MINIMUM 0.22 1928  
TOTALS 1.46 2.95 -1.49 0.66  
DAILY AVG. 0.05 0.10 -0.05 0.02  
DAYS >= .01 7 9.9 -2.9 6  
DAYS >= .10 3 5.6 -2.6 2  
DAYS >= .50 1 2.0 -1.0 0  
DAYS >= 1.00 0 0.8 -0.8 0  
GREATEST  
24 HR. TOTAL 0.99 04/08 TO 04/08  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 22.9 1913  
TOTALS 0.5 1.8 -1.3 3.8  
SINCE 7/1 38.3 34.8 3.5 MM  
SNOWDEPTH AVG. T 0  
DAYS >= 1.0 0 1.0 -1.0 1  
GREATEST  
SNOW DEPTH T 3 MM  
24 HR TOTAL 0.3 04/19 TO 04/19  
 
DEGREE DAYS  
HEATING TOTAL 464 474 -10 513  
SINCE 7/1 6435 6653 -218 MM  
COOLING TOTAL 8 11 -3 4  
SINCE 1/1 8 11 -3 MM    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 11.8  
HIGHEST WIND SPEED/DIRECTION 38/030 DATE 04/28  
HIGHEST GUST SPEED/DIRECTION 50/320 DATE 04/11  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.39  
NUMBER OF DAYS FAIR 14  
NUMBER OF DAYS PC 11  
NUMBER OF DAYS CLOUDY 5  
 
AVERAGE RH (PERCENT) 59  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 1 MIXED PRECIP 0  
HEAVY RAIN 0 RAIN 2  
LIGHT RAIN 12 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 2 SLEET 0  
FOG 6 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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