544 IOWA DEPARTMENT OP AGRICULTURE 



Pressure. — The mean pressure (reduced to sea level) for the state 

 was 30.02 inches. The highest recorded was 30.71 inches, at Davenport, on 

 the 29th, and the lowest was 29.40 inches, at Sioux City, on the 2nd. 

 The monthly range was 1.11 inches. 



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

 means of 107 stations, was 18.7°, or 5.2° lower than the normal for Iowa. 

 By divisions, three tiers of counties to the division, the mean tempera- 

 tures were as follows: Northern, 15.1°, or 6.1° lower than the normal; 

 Central, 19.1°, or 5.0° lower than the normal; Southern, 22.0°, or 4.4° 

 lower than the normal. The highest monthly mean was 26.0°, at Keokuk, 

 and the lowest monthly mean was 11.8°, at Inwood. The highest tem- 

 perature reported was 67°, at Bloomfield, on the 3rd, Earlham, on the 

 4th, and Columbus Junction and Keokuk, on the 7th, and the lowest tem- 

 perature reported was — 25°, at Sibley, on the 20tli, the range for the 

 state being 92. 



Humidity. — The average relative humidity for the state at 7 a. m., 

 was 80.3 per cent, and at 7 p. m., it was 71.4 per cent. The mean for 

 the month was 75.8 per cent, or about 3.7 per cent less than the normal. 

 The highest monthly mean was 84 per cent, at Charles City, and the 

 least reported was 69.4 per cent at Omaha. 



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

 the records of 109 stations, was 1.04 inch, or 0.18 inch less than the 

 normal. By divisions, the averages were as follows: Northern, 0.98 inch, 

 or 0.09 inch less than the normal; Central, 1.09 inch, or 0.16 inch less than 

 the normal; Southern, 1.04 inch, or 0.31 inch less than the normal. The 

 greatest amount, 2.00 inches, occurred at Fort Madison, and the least, 

 0.35 inch, at Alta. The greatest amount in any 24 consecutive hours, 

 0.07 inch, occurred at Northboro, on the 25th. 



8now. — The average snowfall ifor the state was 6.7 inches. The greatest 

 amount, 12.0 inches, occurred at Northwood, and the least, 0.5 inch, at 

 Gilman. Measurable precipitation occurred on an average of six days. 



Wind. — The prevailing direction of the wind wa^ from the northwest 

 The highest velocity reported was at the rate of 46 miles an hour from 

 the northwest, at Sioux City, on the 16th. 



Sunshine and Cloudiness — The average percentage of the possible 

 amount of sunshine was 57 per cent, or about 8 per cent more tnan 

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

 City, 49; Davenport, 52; Des Moines, 59; Dubuque, 61; Keokuk, 55; 

 Sioux City, 60, and Omaha, Nebr., 62 per cent. The average number of 

 clear days was 15; partly cloudy, 8; cloudy, 8. 



Miscellaneous Phenomena. — Dense fog occurred in the extreme eastern 

 and southern counties on the 4th and 7th, and in most of the southern 

 and eastern counties on the 26th. Lunar halos were reported on the 

 following dates: 1st, 3rd, 9th, 10th, 11th, l"5th; Solar halos, 9th, 12th, 



