12 IOWA DEPARTMENT OF AGRlClTLTURE 



inches, which is 1.30 inches below the normal. The greatest amount, 6.41 

 inches, occurred at Alta (near) Buena Vista County, and the least, 0.72 

 inches, at Atlantic, Cass County. The greatest amount in twenty-four 

 hours, 4.42 inches, occurred at Des Moines, Polk County, on the lOth-llth. 

 Measurable precipitation occurred on an average of 10 days. 



Snow. — No snowfall was reported. 



Sunshine and Cloudiness. — The average number of clear days was 14; 

 partly cloudy, 11; cloudy, 6. The duration of sunshine was slightly above 

 the normal, the percentage of the possible amount being 77 at Charles City, 

 68 at Davenport, 77 at Des Moines, 62 at Dubuque, 68 at Keokuk, and 67 at 

 Sioux City. 



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

 43 miles an hour from the south, at Sioux City, Woodbury County, on 

 the 26th. 



MAY NORMALS FOR IOWA, 1890-1912. 



Normal temperature for May, 59.8°. 



Warmest May, 1896, with mean temperature of 65.5°. 



Coldest May, 1907, with mean temperature of 53.5°. 



Normal May precipitation 4.48 inches. 



Wettest May, 1892, with total precipitation of 8.77 inches. 



Driest May, 1894, with total precipitation of 1.87 inches. 



Average number of days with 0.01 inch or more of precipitation, 10. 



Prevailing direction of wind, southeast. 



Average number of clear days, 12; partly cloudy, 11; cloudy, 8. 



JUNE. 



The first and second decades of the month were unusually cool and 

 cloudy, but the last decade was generally clear and dry with the tem- 

 perature considerably above the normal. The average temperature for 

 the month was, however, 2.6° below the average of June for past years. 

 Light frost occurred on low ground in a few localities in the northern 

 counties on the 7th but no damage was done. The 1st, 2d and 4th were 

 also exceptionally cool days; the lowest temperature reported being 34° at 

 Alton, Sioux County, on the 4th, and at Larrabee, Cherokee County, on the 

 7th. Higher temperatures prevailed after the 20th, the highest occur- 

 ing between the 26th and 29th, when all but one station in the state re- 

 ported maximum readings of 90° or higher, the highest being 101° at 

 several stations. Showers were frequent, quite well distriButed, but gen- 

 erally light during the first and second decades. After the 20th the 

 weather was very dry, only a few light and widely scattered showers 

 being reported during the last 4 days. 



From an agricultural view point, the month was very favorable, not- 

 withstanding the fact that the weather was too cool for corn during the 

 first 20 days. Sjnall grain, grass and potatoes made rapid growth, and 

 at the close of the month, rye, fall wheat, and early oats were beginning 

 to ripen in the southern counties, and all grains were headed out and 

 filling nicely in the northern counties. The warm, dry weather during 



