TWENTY-FIRST ANNUAL YEAR BOOK— PART VIII 



627 



Sunshine and Cloudiness. The average per cent of the possible amount 

 of sunshine was 39, or about 17 per cent less than the normal. The per 

 cent of the possible amount at the regular Weather Bureau stations was 

 as follows: Charles City, 28; Davenport, 45; Des Moines, 43; Dubuque, 

 43; Keokuk, 48; Sioux City, 29; Omaha, Neb. 34. 



Miscellaneous Phenomena. Fog: 1st, 2d, 3d, 6th, 7th, 8th, 13th, 20th, 21st, 

 22d. Halos, lunar: 11th, 12th, 27th. Halos, solar: 12th, 20th. Parhelia: 

 14th. Sleet: 3d, 4th, 5th, 8th, 9th, 17th, 20th, 21st, 22d. Zodiacal light: 

 16th, 18th. 



COMPARATIVE DATA FOR THE STATE— FEBRUARY. 



TEAR 



Temperature 



Precipitation 



Number of 

 Days 



P.S 



1890.. 

 1891- . 

 1892.. 

 1893-. 

 1894.. 

 1895.. 

 1896.. 

 1897- 

 1898- 

 1899.. 

 1900- 

 1901- 

 1902- 

 1903- 

 1904- 

 1905- 

 1906.. 

 1907- 

 1908_. 

 1909- . 

 1910.. 

 1911.. 

 1912.. 

 1913.. 

 1914.. 

 1915- 

 1916.. 

 1917.. 

 1918- 

 1919.. 



—0.32 

 +0.01 

 +0.05 

 +0.24 

 —0.26 

 -0.66 

 —0.44 

 —0.26 

 +0.05 

 —0.26 

 +0.15 

 —0.14 

 —0.42 

 +0.03 

 —0.74 

 +0.42 

 +0.14 

 —0.44 

 +0.54 

 +0.39 

 —0.69 

 +1.61 

 +0.06 

 —0.33 

 —0.28 

 +1.78 

 —0.60 

 —0.79 

 —0.20 

 +1.27 

 —0.59 



5.0 



8.1 

 8.4 

 3.3 

 5.4 

 8.0 

 7.8 

 7.1 

 9.9 

 9.7 

 2.6 

 7.9 

 4.5 



15.5 

 6.1 

 4.6 

 8.9 

 7.7 

 4.0 

 7.0 



11.2 

 7.3 

 9.2 

 9.4 

 6.0 

 3.5 

 6.0 

 9.9 

 4.1 



3 I 13 

 6 I 6 

 6 I 10 



3 ! 16 I 



4 I 13 

 12 



6 

 10 

 11 

 10 

 15 

 13 

 13 

 10 

 14 

 14 

 14 

 12 

 11 

 14 

 12 

 10 



T. indicates an amount too small to measure, 

 tion and less than .05 inch snowfall. 



or less than .005 inch preclpita- 



THE WINTER OF 1919-20. 



The mean temperature for the three winter months was 18.6°, which is 

 2.2° below the normal for the State, and 9.5° lower than the mean for 

 1918-1919, which is the warmest of the 30 winters of record. The highest 

 temperature reported was 59° at Keokuk, Le,e County, on February 22d. 

 The lowest temperature reported was 36" below zero at Thurman, Fre- 

 mont County, on December 10th. 



The average monthly precipitation for the State was 0.51 inch, and the 

 average total precipitation was 1.52 inches, or 1.90 inches less than the 



