642 IOWA DEPARTMENT OF AGRICULTURE 



Humidity. The average relative humidity for the State at 7 a. m. was 

 75 per cent, and at 7 p. m. was 55 per cent. The mean for the month was 

 65 per cent, or 5 per cent below the normal. The highest monthly mean 

 was 68 per cent at Charles City and the lowest was 61 per cent at Des 

 Moines and Keokuk. 



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

 the records for 107 stations, was 3.56 inches, or 0.82 inch less than the 

 normal. By divisions the averages were as follows: Northern, 4.50 

 inches, or 0.07 inch more than the normal; Central, 3.14 inches, or 1.18 

 inches less than the normal; Southern, 3.04 inches, or 1.35 inches less 

 than the normal. The greatest amount, 8.48 inches, occurred at Britt, 

 and the least, 1.25 inches, at Des Moines. The greatest amount in 24 

 consecutive hours, 3.10 inches, occurred at Washta, on the 7th. 



Wiyid. The prevailing direction of the wind was from the southwest. 

 The highest velocity reported from a regular Weather Bureau Station was 

 72 miles an hour, from the southwest, at Sioux City, on the 8th. 



Sunshine and Cloudiness. The average per cent of the possible amount 

 of sunshine was 69, or about normal. The per cent of the possible amount 

 at the regular Weather Bureau Stations was as follows: Charles City, 64; 

 Davenport, 80; Des Moines, 64; Dubuque, 70; Keokuk, 83; Sioux City, 54; 

 Omaha, Neb., 66. 



Miscellaneous Phenomena. Fog: 2d, 22d, 23d. Frost: 3d, 5th, 18th. 

 Hail: 1st, 6th, 7th, 8th, 9th, 10th, 15th, 16th, 21st, 22d, 26th, 29th, 30th. 

 Halos, lunar or solar: 2d, 4th, 8th, 10th, 13th, 15th, 17th, 18th, 19th, 20th, 

 26th, 30th. Thunderstorms: All days during the month except on the 

 3d, 5th, 17th, 18th, 19th, 23d, 27th. 



Rivers. Moderate stages prevailed on the Mississippi with a general 

 falling tendency the first half of the month and rising stages the last 

 half. On the Missouri moderate falling stages prevailed the first half 

 and moderate to high increasing stages the last half of the month, the 

 crest stage from the 27th to the 29th was about 1 foot below the flood 

 stage. On the interior rivers low stages for the season prevailed. 



