604  
CXUS53 KFSD 011723 RRA  
CLMSUX  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
1222 PM CDT THU OCT 01 2020  
   
...............................
 
 
...THE SIOUX CITY IA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2020...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1889 TO 2020  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 103 MM  
LOW 24 MM  
HIGHEST 93 09/06 MM MM 89 09/30  
LOWEST 39 09/29 MM MM 43 09/26  
AVG. MAXIMUM 75.8 76.2 -0.4 80.3  
AVG. MINIMUM 50.2 50.6 -0.4 58.5  
MEAN 63.0 63.4 -0.4 69.4  
DAYS MAX >= 90 2 2.1 -0.1 0  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 0 0.7 -0.7 0  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 9.69 1965  
MINIMUM 0.07 1950  
TOTALS 1.60 2.96 -1.36 4.02  
DAILY AVG. 0.05 0.10 -0.05 0.13  
DAYS >= .01 5 8.3 -3.3 13  
DAYS >= .10 4 4.9 -0.9 4  
DAYS >= .50 1 1.9 -0.9 2  
DAYS >= 1.00 1 0.8 0.2 1  
GREATEST  
24 HR. TOTAL 1.12 09/08 TO 09/09  
 
DEGREE DAYS  
HEATING TOTAL 108 132 -24 31  
SINCE 7/1 110 148 -38 36  
COOLING TOTAL 57 84 -27 172  
SINCE 1/1 1055 861 194 910    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 9.4  
HIGHEST WIND SPEED/DIRECTION 36/330 DATE 09/30  
HIGHEST GUST SPEED/DIRECTION 47/330 DATE 09/30  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.27  
NUMBER OF DAYS FAIR 21  
NUMBER OF DAYS PC 4  
NUMBER OF DAYS CLOUDY 5  
 
AVERAGE RH (PERCENT) 66  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 3 MIXED PRECIP 0  
HEAVY RAIN 2 RAIN 2  
LIGHT RAIN 8 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 2  
HAZE 1  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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