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IOWA DEPARTMENT OF AGRICULTURE 



COMPARATIVE DATA FOE THE STATE— NOVEMBER. 



TEAR 



1890 - 



1891 



1892 



1893 



1894 



1895 



1896 



1«97 



1898 



1900— - 



1901 



1902 



1903 - 



1904 



1905 



1906 



1907 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



1915 



1916 



1917 



1918 



1919 



•a 



s 

 o 



C 



7 



12 



11 



6 



10 



13 



13 



10 



8 



10 



11 



6 



14 



9 



4 



7 



14 



7 



9 



13 



8 



11 



4 



12 



5 



9 



8 



10 



12 



12 



T indicates an amount too small to measure, or less than .005 ineli precipita- 

 tion, and less than .05 inch snowfall. 



DECEMBER. 



Wintry weather was the outstanding feature. Though not the coldest 

 December for the State as a whole, stations in the eastern half, having 

 records that began since 1876, established new records for low mean tem- 

 perature. The first three weeks of the month were colder than any other 

 similar period of record. A well-defined cold wave occurred on the 12th- 

 13th and another was sweeping southward across the State on the 31st. 

 December 10th was severely cold. In the morning of that date local areas 

 in Hardin, Grundy, Poweshiek, Dallas, Fremont and Taylor counties ex- 

 perienced temperatures of 30° below zero or lower, which have never be- 

 fore been recorded so early in the winter. 



Precipitation, mainly snow, was general on the 1st, and 6th-9th, and scat- 

 tered on a few other dates. It was well distributed, but below normal, at 

 all stations except Earlham. Under the snow covering, the ground froze 

 but a few inches and where the snow was a foot or more deep it scarcely 

 froze at all, in spite of the low temperature. The snow covering was 

 continuous throughout the State, except the southern tier of counties 

 and along the Mississippi river south of Davenport, where the ground 

 became bare toward the close of the month. From Pottawattamie and 



