2 IOWA DEPARTMENT OF AGRICULTURE 



highest, with one exception, 1901, ever recorded in the State, and the 

 drought was very severe and damaging, especially in the southwestern 

 quarter of the State. But, notwithstanding the adverse conditions during 

 the summer months, the crop output was very satisfactory. The average 

 yields were, with the exception of hay and potatoes, nearly up to the nor- 

 mal, and the prices obtained were higher than those of former years, mak- 

 ing the total value far in excess of any crop ever produced in the State. 



Barometer (reduced to sea level). The average pressure of the atmo- 

 sphere for the year 1911 was 30.04 inches. The highest observed pressure 

 was 30.96 inches, at Sioux City, Woodbury County, on November 2d. The 

 lowest pressure observed was 29.23 inches, at the same station, on May 

 18th. The range for the State was 1.73 inches. 



Tejipeeatuee. The mean temperature for the State was 49.5°, or 2.0° 

 more than the normal. The highest annual mean was 54.3°, at Keokuk, Lee 

 County. The lowest annual mean was 44.4°, at Sibley, Osceola County. 

 The highest temperature reported was 111° at Bloomfield, Davis County, on 

 July 3d and 5th, and at Jefferson, Greene County, and Keosauqua, Van 

 Buren County, on July 5th. The lowest temperature reported was — 35°, at 

 Inwood, Lyon County, and at Washta, Cherokee County, on January 3d. 

 The range for the State was 140°. 



Precipitation. The average precipitation for the State was 31.37 inches, 

 or 1.28 inches less than the normal. The average for 1910 was 20.03 inches. 

 The greatest amount recorded at any station was 46.77 inches, at Burling- 

 ton, Des Moines County, and the least amount was 19.74 inches, at Pacific 

 Junction, Mills County. The greatest monthly precipitation was 13.73 

 inches, at Bloomfield, Davis County, and at Wapello, Louisa County, in 

 September. The least monthly precipitation was a trace, at Alton, Sioux 

 County, and at Estherville, Emmet County, in March. The greatest amount 

 in any consecutive 24 hours was 7.00 inches, at Bloomfield, Davis County, 

 on September 28th. 



The average amount of snowfall was 35.3 inches. The greatest amount 

 recorded at any station was 58.6 inches, at Charles City, Floyd County, and 

 the least amount was 12.5, at Keokuk, Lee County. The greatest monthly 

 snowfall was 27.0 inches at Northwood, in December. The greatest twenty- 

 four hour snowfall was 12.0 inches, at Elma, Howard County, on December 

 31st; at Northwood, Worth County, on December 26th, and at Waverly, 

 Bremer County, on December 30th. Measurable precipitation occurred on 

 an average of 87 days. This is 20 more than for the year 1910. 



Wind. The prevailing direction of the wind was northwest. The highest 

 velocity reported was 73 miles an hour, at Sioux City, Woodbury County, 

 on April 12th. 



Sunshine and Cloudiness. The average number of clear days was 105; 

 partly cloudy, 99; cloudy, 101; as against 188 clear days; 92 partly cloudy; 

 and 85 cloudy days in 1910. More than the usual amount of sunshine was 

 experienced. 



