20 IOWA DEPARTMENT OF AGRICULTURE 



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

 by the records of 114 stations, was 27.9°, which is 4.3° above the normal 

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

 section, 25.0°, which is 4.1° above the normal; Central section, 28.1°, 

 which is 4.3° above the normal; Southern section, 30.5°, which is 4.3° 

 above the normal. The highest monthly mean was 34.9°, at Keokuk, Lee 

 County, and the lowest monthly mean was 21.3°, at Sibley, Osceola County. 

 The highest temperature reported was 60°, at Keokuk, Lee County, on the 

 10th; the lowest temperature reported was — 24°, at Washta, Cherokee 

 County, on the 28th. The average monthly maximum was 53°, and the 

 average monthly minimum was — 11°. The greatest daily range was 49°, 

 at Woodburn, Clarke County. The average of the greatest daily ranges 

 was 36°. 



Pkecipitation, — The average precipitation for the state, as shown by 

 the records of 121 stations, was 2.57 inches, which is 1.38 inches above the 

 normal. By sections the averages were as follows: Northern section, 2.65 

 inches, which is 1.62 inches above the normal; Central section, 2.55 inches, 

 which is 1.35 inches above the normal; Southern section, 2.52 inches, 

 which is 1.19 inches above the normal. The greatest amount, 4.43 inches, 

 occurred at New Hampton, Chickasaw County, and the least, 0'.62 of an 

 inch, at Inwood, Lyon County. The greatest amount in any consecutive 

 24 hours was 2.98 inches, at New Hampton, on the 10th. Measurable pre- 

 cipitation occurred on an average of 7 days. 



Snow. — The average depth of snowfall was 12,6 inches. By sections 

 the averages were as follows: Northern section, 13.8 inches; Central sec- 

 tion, 12.0 inches; Southern section, 12.1 inches. The greatest monthly 

 amount was 27.0 inches, at Northwood, Worth County. 



Sunshine and Cloudiness. — The average number of clear days was 13; 

 partly cloudy, 6; cloudy, 12. The duration of sunshine was above the 

 normal, the percentage of the possible amount being 46 at Davenport; 51 

 at Des Moines; 49 at Dubuque; 45 at Keokuk; and 48 at Sioux City. 



Wind — Southwest winds prevailed. The highest velocity reported was 

 46 miles an hour from the northwest, at Sioux City, Woodbury County, on 

 the 31st. 



ANNUAL NORMALS FOR IOWA, 1890-1911. 



Normal annual temperature, 47.9°. 



Warmest year, 1894, with mean temperature of 49.7°. 



Coldest year, 1893, with mean temperature of 45.7°. 



Normal annual precipitation, 31.58 inches. 



Wettest year, 1902, with total precipitation of 43.82 inches. 



Driest year, 1910, with total precipitation of 19.87 inches. 



Average annual snowfall (unmelted) 30.4 inches. 



Greatest annual snowfall. 49.0 inches in 1909. 



Least annual snowfall, 19.2 inches in 1894. 



