42 



MICHIGAN SURVEY, 1908. 



Highest Temperatures in °F, 



Lowest Temperatures in °F. 



The precipitation during the same period is shown in Table 2. The 

 minimum average monthly rainfall for the period is .002 inches for 

 February, with a maximum of 4.25 inches in July, and an annual 

 total of 21.73. inches, more than half of which fell during the growing 

 season for the vegetation — June, July and August. The snowfall 

 averaged a maximum for January with 4.59 inches and an annual total 

 of 25.44 inches. The, deep snows of this region are thus seen not to 

 be due so much to the abundant precipitation as to its preservation by 

 the low temperature. 



