74 
SOIL SURVEY OF OUTAGAMIE COUNTY. 
CLIMATE. 
The climate of Outagamie County is typical of that of east- 
central Wisconsin. It is healthful, though subject to extreme 
changes in temperature. The winters are long and severe. The 
thermometer frequently falls as low as —20° F. The ground 
freezes to a depth of 1 to 3 feet. Snow usually remains on the 
ground from December to March or later and protects such win¬ 
ter crops as clover, alfalfa, and wheat. The summers are com¬ 
paratively short, but pleasant. The thermometer sometimes 
reaches 100° F. or more. The highest temperature recorded at 
New London is 104° F., but such extremes are rare. The hot¬ 
test periods during the summer months seldom continue for more 
than a few days, and it is unusual for the temperature to re¬ 
main below zero for more than a week at a time during the 
winter. 
The average rainfall of 32.68 inches is distributed throughout 
the year, although the precipitation is heaviest during the grow¬ 
ing season and lightest in the winter. The average for the sum¬ 
mer months of June, July and August is 11.63 inches. 
The average date of the last killing frost in the spring, as re¬ 
corded at New London, is May 10, and that of the first in the 
fall, September 25. This gives an average growing season of 
138 days. The length, however, varies somewhat in different 
parts of the county, and in the southeastern part of the county, 
in the region of the Fox River, the season may be 5 to 10 days 
longer. Killing frost has been recorded at New London as late 
in the spring as June 12 and as early in the fall as August 30. 
In the following table are given the more important climatic 
data as recorded by the Weather Bureau station at New London : 
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