FOURTH ANNUAL YEAR BOOK-^PART II. 103 



sections the mean temperatures were as follows: Northern section, 

 36.1"; central section, 39.4"; southern section, 41.1". The highest monthly 

 mean was 45.0'' at Eldon; lowest monthly mean, 30.8° at Sibley. The 

 highest temperature reported was 82°, at Mount Pleasant, on the 14th; 

 lowest temperature reported, 6°, at Baxter and Clear Lake, on the 1st. The 

 average aionthiy maximum was 72.1°; average monthly minimum, 11.2". 

 Greatoi-t daily range, 48°, at Monticello; average of greatest daily ranges, 

 35.3°. Average precipitation for the State, as shown by records of 126 

 stations, was 1.38 inches, which is 0..53 of an inch below normal. The 

 averages by sections were as follows: Northern section, 1.40 inches; 

 central section, 1.34 inches; southern section, 1.39 inches. The largest 

 amount reported was 3.90 inches at LeMars; least amount reported, .15 

 of an inch at Denison and Ruthven. The greatest daily rainfall reported 

 was 1.80 inches at Keokuk on the 7th. Average number of days on which 

 .01 of an inch or more was reported, 7. Prevailing direction ol the wind, 

 southwest; highest velocity reported, 41 miles per hour, from the north- 

 west, at Sioux Citv. on the 23d. Average number of clear days, 11; partly 

 cloudy. 7; cloudy, 13. 



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

 records of 107 stations, was 49.8°, which is> 0.3° above normal. By sec- 

 tions the mean temperatures were as follows: Northern section, 47.6°; 

 central section, .50.0°; southern section, 51.8°. The highest monthly 

 mean was 53.8', at Burlington; lowest monthly mean, 44.9°, at Forest 

 City. The highest temperature reported was 86°, at Mt. Vernon on the 

 11th; lowest temperature reported, 17°, at Larchwood, on the 30th. The 

 average monthly maximum was 77.4°; average monthly minimum, 25.0°. 

 Greatest daily range, 52°, at Stuart; average of greatest daily ranges, 

 39.7°. Average precipitation for the State, as show^n by records of 120 

 stations, was 2.98* inches, which is 0.03 of an inch below normal. The 

 averages by sections were as follows: Northern section, 3.38 inches; 

 central section, 2.89 inches: southern section, 2.67 inches. The largest 

 amount reported was 6.00 inches, at Grand Meadow; least amount re- 

 ported, 0.74 of an inch, at Logan. The greatest daily rainfall reported 

 was 3.16 inches, at Columbus Junction, on the 10th and 11th. Average 

 number of days on which .01 of an inch or more was reported, 9. Pre- 

 vailing direction ot the wind, north v/est; highest velocity reported, 45 

 miles per hour, from the south, at Sioux City, on the 27th. Average num- 

 ber of clear days, 11; partly cloudy, 9; cloudy, 10. 



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

 records of 117 stations, was 61.6 •', which is 1.4 above normal. By sections 

 the mean temperatures were as follows: Northern section, 60.4°; central 

 section, 61.9°; southern section, 62.6°. The highest monthly mean wag 

 65.2°, at Burlington; lowest monthly mean, 55.2°, at Estherville. The 

 highest tem.perature reported was 91°, at Clinton, on the 20th; lowest 

 temperature reported, 24°, at Bedford and Earlham, on the 1st and 3d. 

 The average monthly maximum w^as 83.3°; average monthly minimum, 

 29.6°. Greatest daily range, 49°, at Larchwood; average of greatest daily 

 ranges, 33.8°. ..-Average precipitation for the State, as shown by records 



