SEVENTH ANNUAL YEAR BOOK-PART II. 33 



monthly mean was 31.2 at Sibley. The highest temperature reported was 

 76° at Corydon, Oskaloosa and St. Charles, on the 6th. The lowest tem- 

 perature reported was 5° below zero, at Woodburn, on the 22d. The aver- 

 age monthly maximum was 69.6°, and the average monthly minimum was 

 8.7°. The greatest daily range was 47° at "Woodburn, and the average of 

 greatest daily ranges was 32.4°. The average precipitation for the State, 

 as shown by records of 123 stations, was 2.03 inches, which is 0.72 of an 

 inch above the normal. The averages by sections were as follows: North- 

 ern section, 1.80 inches, which is 0.55 of an inch above the normal; Central 

 section, 2.17 inches, which is 0.76 of an inch above the normal; Southern 

 section, 2.11 inches, which is 0.82 of an inch above the normal. The larg- 

 est amount reported was 3.86 inches at Preston; the least amount reported 

 was 0.35 of an»inch at Washta. The greatest daily rainfall reported was 

 2.00 inches at Preston, on the 25th. The average number of days on which 

 .01 of an inch or more was reported, was 8. The prevailing direction of 

 the wind was northwest. The highest velocity reported was 48 miles per 

 hour, at Sioux City, on the 1st. The average number of clear days was 

 9; partly cloudy, 7; and cloudy days, 14. 



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

 the records of 116 stations, was 25.7°, which is 2.7° above the normal for 

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

 23.5°, which is 3.5° above the normal; Central section, 24.2°, which is 1.1* 

 above the normal; Southern section, 29.5°, which is 3.9° above the normal. 

 The highest monthly mean was 31.6°, at Keokuk, and the lowest monthly 

 mean was 19.9° at Elkader. The highest temperature reported was 65° at 

 Allerton, Chariton, Corydon and Clarinda on the 5th and 12th. The low- 

 est temperature reported was ^9° at Washta on the ISth. The average 

 monthly maximum was 50.3°, and the average monthly minimum was 

 — 2.7°. The greatest daily range was 43° at Iowa City, Keosauqua, Mount 

 Pleasant and Stockport. The average of greatest daily ranges was 32.6°. 

 The average precipitation for the State, as shown by the records of 113 

 stations, was 1.43 inches, which is .18 of an inch above the normal. By sec- 

 tions the averages were as follows: Northern section, 1.12 inches, which 

 is .07 of an inch above the normal; Central secticn, 1.47 inches, which is 

 .13 of an inch above the normal; Southern section, 1.71 inches, which is .34 

 of an inch above the normal. The largest amount reported was 2.81 inches, 

 at Independence. The least amount reported was .37 of an inch at Esther- 

 ville. The greatest daily rainfall reported was 2.15 inches, at Bloomfield, 

 on the 30th. The average number of days on which .01 of an inch or more 

 was reported was 6. The prevailing direction of the wind was northwest. 

 The highest velocity of wind reported was 47 miles per hour, from the 

 northwest, at Sioux City, on the 13th. The average number of clear days 

 was 11; partly cloudy 7, cloudy days 13. 



