EIGHTEENTH ANNUAL YEAR BOOK— i-ART IX 491 



29th, and the lowest was 29.63 inches at Sioux City on the 23d. The 

 monthly range was 1.47 inches. 



Temperature. — The mean temperature for the State, as shown by the 

 means of 105 stations, was 14.5°, or 9.4°> lower than the normal. By 

 divisions, three tiers of counties to the division, the mean temperatures 

 were as follows: Northern, 11.2°, or 10.0° lower than the normal; Cen- 

 tral, 14.7°, or 9.4° lower than the normal; Southern, 17.6°, or 8.8° lower 

 than the normal. The highest monthly mean was 20.9°, at Keokuk, and 

 the lowest monthly mean was 6.3° at Inwood. The highest temperature 

 reported was 62°, at Keokuk on the 2d, and the lowest temperature re- 

 ported was -40° at Washta on the 29th, the range for the State being 102°. 



Humiditi/.—Tlie average relative humidity for the State at 7 a. m. was 

 83 per cent, and at 7 p. m. it was 77 per cent. The mean for the month 

 was SO per cent, or about normal. The highest monthly mean was 86 per 

 cent at Charles City, and the least reported was 74 per cent at Omaha, 

 Nebr. 



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

 the records of 110 stations, was 0.56 inch, or 0.66 inch less than the nor- 

 mal. By divisions, the averages were as follows: Northern, O.'Sl inch, 

 or 0.56 inch less than the normal; Central, 0.63 inch, or 0.62 inch less 

 than the normal; Southern, 0.54 inch, or 0.81 inch less than the normal. 

 The greatest amount, 1.70 inches, occurred at Lacona, and the least, 0.14 

 inch, at Algona. The greatest amount in any 24 consecutive hours, 0.45 

 inch, occurred at Iowa Falls, on the 12th. 



Snow. — The average snowfall for the State was 6.7 inches. The great- 

 est amount, 17.0 inches, occurred at Lacona, and the least, 1.8 inches at 

 Lenox. 



Wind. — The prevailing direction of the wind was from the northwest. 

 The highest velocity reported was at the rate of 51 miles an hour from 

 the northwest at Sioux City, on the 9th. 



Sunshine and Cloudiness. — The average percentage of the possible 

 amount of sunshine was 38 per cent, or about 11 per cent less than the 

 normal. The percentage of the possible amounts being: Charles City, 

 28; Davenport, 20; Des Moines, 46; Dubuque, 40; Keokuk, 44; Sioux 

 City, 45; and Omaha, Nebr., 40 per cent. The average number of clear 

 days was 10; partly cloudy, 9; cloudy, 12. 



