FIFTEENTH ANNUAL YEAR BOOK— PART XI 



751 



COMPARATIVE DATA FOR THE STATE— JANUARY. 



Year 



Temperature 



Precipitation 



1S90 



1891 



1892 



1893 



1891 



1895 



1896 



mn 



1898 



1899 



1900 



1901 



1902 



1903 



1904 



1905 — 



1906 -- 



1907 



1908 



1909 ..- 



1910 



1911 



1912 



1913 



1914 



T indicates a trace 



.35 

 .61 

 .10 

 .13 

 .31 

 .09 



T 

 .15 



T 



T 



T 

 .04 

 .19 



T 

 .02 

 .12 

 .28 

 .10 

 .06 

 .41 

 .55 

 .11 



T 

 .04 

 .27 



indicates temperature below zero. 



TEMPERATURE IN IOWA FOR DECEMBER AND JANUARY, 1860-1914. 



(Iowa City, Iowa.) 



The present unusually moderate winter tlirougliout Iowa lias been a 

 matter of general comment, and some data concerning the months of 

 December and January just past may be interesting, especially if compared 

 with records for the same months of former years. We find the months 

 of December, 191.3, and January, 1914, unique in the annals of Iowa 

 weather. 



Voluntary observations on the weather in the state of Iowa were first 

 begun by Professor T. S. Parvin at Muscatine as early as 1839, and the 

 work continued there for twenty years. In 1860 Professor Parvin began 

 observations at Iowa City and these have been continued without inter- 

 ruption since that time. 



On account of the location of Muscatine upon the Mississippi river 

 the mean temperature taken at that station is probably a little above 

 the average temperature at Iowa City; this may be borne in mind 

 when considering data prior to 1860. 



The past fifty years have been characterized by one December and 

 one January each of which stands out with a temperature so far above 

 the average as to satisfy even the demands of "the oldest inhabitant." 

 January, 1880, with a mean temperature of 35.2°, and December, 1877, 

 with a temperature of 40.1° are so far above the average for these re- 

 spective months as to probably be rarely equaled. The absolute maxi- 



