SEVENTH ANNUAL YEAR BOOK— PAET II. 31 



mean was 67.1°, at Sibley. The highest temperature reported was 102° 

 at Atlantic, on the 21st; and the lowest reported was 42° at Washta, on the 

 7th and 8th. The greatest daily range of temperature was 46° at Washta, 

 and the average of greatest daily ranges was 34.6°. The average of 

 monthly maximums was 93.6°, and the average of monthly fiiinimums was 

 48.8°. The average precipitation for the State, as shown by the records of 

 131 stations, was 3.04 inches, which is 1.31 inches below the normal. The 

 averages by sections were as follows: Northern section, 3.04 inches, which 

 is 1.17 inches below the normal ; Central section, 3.09 inches, which is 1.14 

 inches below the normal; Southern section, 3.00 inches, which is 1.62 

 inches below the normal. The largest aittount reported was 7.05 inches at 

 Independence, the least amount reported was 0.28 of an inch at Tipten. 

 The greatest daily rainfall reported was 2.82 inches at Little Sioux, 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 36 miles an hour from the northwest, at 

 Keoknk, on the 22d. The average number of clear days was 18; partly 

 cloudy days, 10; and cloudy days, 3. 



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

 the records of 116 stations, was 74.1°, which is 2.1° above the normal. 

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

 72.6°, which is 1.9° above the normal; Central section, 74.2°, which is 2.6° 

 above the normal; Southern section, 75.4°, which is 1.8° above the normal. 

 The highest monthly mean was 77.4°, at Ottumwa; and the lowest monthly 

 mean was 70.9° at Estherville. The highest temperature reported was 101° 

 at Odebolt, on the 16th. The lowest temperature reported was 33° at 

 Washta, on the 27th. The average monthly maximum was 95°, and the 

 average monthly minimum was 43.6°. The greatest daily range was .47° 

 at Washta. The average of greatest daily range was 34.2°. The average 

 amount of precipitation for the State, as shown by records of 125 stations, 

 was 3.95 inches, which is .38 of an inch above the normal. The averages 

 by sections were as follows: Northern section, 5.14 inches, which is 2.04 

 inches above the narmal; Central section, 3.98 inches, which is 0.26 of an 

 inch above the normal; Southern section, 2.74 inches, which is 1.16 inches 

 below the normal. The largest amount reported was 10.51 inches at Sib- 

 ley, Osceola county, and the lowest amount reported was 0.92 of an inch 

 at Allerton, Wayne county. The greatest daily rainfall reported was 4.00 

 inches at 01 in on the 6th. The average number of days on which .01 of 

 an inch or more of rainfall was reported was 9. The prevailing direction 

 of the wind for the State was southwest. The highest velocity of wind 

 reported was 32 miles per hour, at Sioux City, on the 1st. The average 

 number of clear days observed at all stations was 17; of partly cloudy days 

 there was an average of 9, and cloudy days 5. 



September. — The monthly mean temperature for the State as shown 

 by the records of 111 stations was 67.2°, which is 3.4° above the normal. 

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

 65.3°, which is 3.0° above the normal; Central section, 67.3°, which is 4.0° 

 above the normal; Southern section, 68.9°, which is 3.1° above the normal. 

 The highest monthly mean was 71.9° at Ottumwa, and the lowest monthly 



