CLIMATE. 



147 



TABLE I. (5.) 



TEMPERATURE OF THE SEASONS.- -1850-6 



SEASONS. 



TEMPERATURE. 



MONTHS NEAREST SEASONS. 



Spring 1 



47° 44' 

 70° 37' 

 44° 52' 

 23° 37' 



47° 57' 



April 



48° 50' 



Summer 



August 



70° 70' 



Autumn 



October 



49° 50' 



Winter 



December 



23° 25' 



Year 















RANGE OF TEMPERATURE. 





Highest 



99° 00° 



30° 00' 



129° 00' 



August 31st,1854 



Lowest 



January 18th, 1857. 





Range 









Table I (5) shows the temperature of the seasons, being the 

 mean results for the years 1839-69 aforesaid. To this table 

 is added the mean temperature of the months nearest thereto. 



The month of December is here joined to those of January 

 and February of the same legal year. 



Following this is the range of temperature with the dates 

 corresponding. The highest temperature here occurs in 

 August, while July is the hottest month of the year by nearly 

 two degrees, and January the coldest by three degrees. 

 During a residence of more than thirty years in central 

 eastern Iowa, I have never seen the mercury rise to 100 degrees 

 nor fall below 30 degrees. 



The mean temperatures of April and October most nearly 

 correspond to the mean temperature of the year, as well as 

 their seasons of Spring and Fall; while that of the Summer 

 and Winter is best represented in that of August and 

 December. 



