IOWA ACADEMY OP SCIENCES. 



159 



SIOUX CITY. 



TKMPERATURE — DEGREES. 



COUNCIL BLUFFS FOR 1900. 



3 V 



a ^ 



S ^ 

 sd <L> 



January 



t" ebruary 



March 



April 



May 



June 



July 



August 



September 



October 



November 



December 



Annual mean, 51.9 degrees 



22 



11 



12 



26 



11 



6 



6 



17 



5 



4 



3 



17 



63 

 47 

 77 

 81 

 91 

 98 

 101 

 96 

 96 

 89 

 77 

 60 



-11 

 -4 

 26 

 32 

 50 

 55 

 60 

 38 

 29 

 10 

 



25 



8 



16 



10 



2 



i 



16 

 25 

 16 

 16 

 20 

 31 



STJNSHINE AND WIND. 



Temperature is influenced to a considerable extent by 

 the condition of the atmosphere. The following table 

 kindly prepared by Mr. J. R. Sage of the Iowa State 

 Weather and Crop Service shows the number of cloudy, 

 partly cloudy, and clear days for year 1898, also recording 

 the totals for the year 1900 for the same places. 



