22 IOWA DEPARTMENT OF AGRICULTURE 



out-door work, but the ground is very dry and more snow is needed for 

 fall sown grains. 



Tempebattjee. — The monthly mean temperature for the state, as shown 

 by the records of 115 stations, was 29.2°, or 5.6° higher than the normal for 

 Iowa. By sections the mean temperatures were as follows: Northern, 

 26.3°, or 5.4° higher than the normal; Central, 29.8°, or 6.0° higher than 

 the normal; Southern, 31.6°, or 5.4° higher than the normal. The highest 

 monthly mean was 34.8°, at Ottumwa, Wapello County; and the lowest 

 monthly mean, 21.6°, at Rock Rapids, Lyon County. The highest tempera- 

 ture reported was 64°, at Keokuk, Lee County, on the 5th; the lowest 

 temperature reported was — 13°, at Inwood, Lyon County, on the 6th. 

 The average monthly highest was 55°, and the average monthly lowest 

 was zero. The greatest daily range was 46°, at Inwood, Lyon County. The 

 average of the greatest daily range was 38°. 



Precipitation. — The average precipitation for the state, as shown by the 

 records of 122 stations, was 0.74 inch, or 0.45 inch less than the normal. 

 By sections the averages were as follows: Northern, 0.91 inch, or 0.12 

 inch less than the normal; Central, 0.71 inch, or 0.49 inch less than the 

 normal; Southern, 0.59 inch, or 0.74 inch less than the normal. The 

 greatest amount, 1.75 inches, occurred at Northwood, Worth County, and 

 the least, 0.10 inch, at Lake Park, Dickinson County, and at Sheldon, 

 O'Brien County. The greatest amount in any 24 consecutive hours, 1.30 

 inches, occurred at Chariton, Lucas County, on the 1st. Measurable pre- 

 cipitation occurred on an average of 3 days. 



Snow. — The average snowfall for the state was 1.1 inches. By sections 

 the averages were as follows: Northern, 2.2 inches; Central, 0.4 inch; 

 Southern, 0.8 inch. The greatest monthly amount,. 11.0 inches, occurred 

 at Northwood, Worth County. 



Sunshine and CLoumNESs. — The average number of clear days was 18; 

 partly cloudy, 7; cloudy, 6. The duration of sunshine was much above 

 the normal, the percentage of the possible amount being 64 at Charles 

 City; 71 at Davenport; 73 at Des Moines; 55 at Dubuque; 66 at Keokuk; 

 and 67 at Sioux City. 



Wind. — Southwest winds prevailed. The highest velocity reported was 

 47 miles an hour from the north, at Sioux City, Woodbury County, on the 

 1st. 



DECEMBER NORMALS FOR IOWA— 1890-1912. 



Normal temperature for December, 24.4°. 

 Warmest December, 1891, with mean temperature of 32.3°. 

 Coldest December, 1909, with mean temperature of 15.5°. 

 Normal precipitation for December, 1.20 inches. 

 Wettest December, 1911, with total precipitation of 2.57 inches. 

 Driest December, 1910, with total precipitation of 0.37 inch. 

 Average depth of snowfall for December, 6.2 inches (1892 to 1912 in- 

 clusive). 



Greatest amount of snowfall in December, 15.9 inches in 1897. 

 Least amount of snowfall in December, 1.1 inches in 1912. 

 Average number of days with 0.01 inch or more of precipitation, 5. 



