INTRODUCTION. 



23 





Precipita- 

 tion. 



Mean 

 temperat're 





9 35 

 2.71 

 5.04 

 3.H3 

 1.79 

 6.24 

 1.68 

 3.81 

 2.63 

 1.74 

 2.10 

 1.95 



43.39 in. 



42 r 





39 G 







April . 



6fi 1 



Miiy 



65.1 





74 



July 



80.1 





76.2 





67 3 





54 9 





41.0 





23.4 









55.3» 











The largest rainfall in 24 hours during 1876 was 2.60 inches. The 

 maximum heat for the year was 97°, and greatest degree of cold 

 during the winter 1876-7 was 0° (zero). 



Eainfall during the year commencing June 16, 1884, was as 



follows : 



June 0.38 



July 2.05 



August 1.29 



September 6.35 



October 2 33 



November 1.97 



December 7.59 



January 3.81 



February 1.48 



March 0.95 



April 1.69 



M^y 2.75 



Juae 3.59 



Total for the year 35.23 incites. 



Maximum precipitation during 24 hours in 1883 4.40 inches. 



Maximum precipitation during 24 hours from June IG, 



1884, to June 15, 1885 2.09 inches. 



Maximum temperature for summer of 1884 -|-98'' 



1885 -f98 



Minimum temperature for winter of 1883-4 — 25° 



1834-5 —15° 



The following are a few of the unusually heavy rainfalls for 

 localities in Illinois as recorded in the report of the Chief Signal 

 Officer for 1880: 



Louisville: 2 inches in 5 hours (Jan. 2, 1880), 5 inches in 2 hours 

 (July 1, 1878). Peoria: 3.94 inches (May 8, 1880). Rock Island: 

 3.74 inches (June 1, 1880). Cairo: 3 inches in 90 minutes (June 

 27, 1879). Elmira: 3.29 inches in 1 hour 55 minutes (August 19, 

 1878.) Chicago: 4.14 inches (July 26, 1878). 



