NINETEENTH ANNUAL YEAR BOOK— PART X 563 



Temperature. The mean temperature for the State, as shown by the rec- 

 ords of 102 stations was 39.9°, or 4.9° higher than the normal. By divi- 

 sions, three tiers of counties to the division, the means were as follows: 

 Northern, 38.1°, or 5.3° higher than the normal; Central, 40.0°, or 4.9° 

 higher than the normal; Southern, 41.5°, or 4.4° higher than the normal. 

 The highest monthly mean was 43.8°, at Keokuk, and the lowest was 36.0°, 

 at Mason City and Sibley. The highest temperature recorded was 76° at 

 Bloomfield, Fairfield, Keosauqua, Ottumwa, Stockport and Washington, 

 on the 6th, and the lowest, zero, at Mason City, on the 25th. The tem- 

 perature range for the State was 76°. 



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

 84 per cent and at 7 p. m. 71 per cent. The mean for the month was 78 

 per cent, which is 4 per cent above the normal. The highest mean was 

 84 per cent at Charles City, and the lowest, 74 per cent, at Dubuque and 

 Keokuk. 



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

 records of 109 stations, was 2.11 inches, or 0.60 inch above the normal. 

 By divisions the averages were as follows: Northern, 2.36 inches, or 0.95 

 inch greater than the normal; Central, 1.84 inches, or 0.31 inch greater 

 than the normal; Southern, 2.13 inches, or 0.55 inch greater than the 

 normal. The greatest amount, 5.10 inches, occurred at Northwood, and the 

 least, 0.70 inch, at Cedar Rapids. The greatest amount in 24 consecutive 

 hours, 2.07 inches, occurred at Sibley on the 16th. 



Snowfall. The average fall for the State was 4.4 inches, which is 1.9 

 inches more than the normal. The heaviest fall was 9.5 inches at Fayette 

 Practically the entire fall of snow occurred on the 27th and 28th when 

 one of the largest November snows on record occurred over a large por- 

 tion of the State. The snowfall was light over the northwest and south- 

 east portions, a few stations reporting only traces. 



Wind. The prevailing direction of the wind was from the northwest. 

 The highest velocity reported from a regular Weather Bureau station was 

 at the rate of 49 miles per hour, from the northwest, at Sioux City, on the 

 17th. 



Sunshine. The average per cent of the possible amount of sunshine was 

 52, or 4 per cent less than the normal. The per cent of the possible 

 amount at the regular Weather Bureau stations was as follows: Charles 

 City, 44; Davenport, 49; Des Moines, 51; Dubuque, 55; Keokuk, 59; Sioux 

 City, 50; Omaha, Nebr., 53. There was an unusual period of almost con- 

 tinuous cloudiness 15th-23d. 



Miscellaneous Phenomena. Aurora, 10th, 11th, 29th, 30th. Fog, dense, 

 2d, 3d, 4th, 5th, 7th, 10th, 15th, 16th, 17th, 26th. Hail, 7th, 16th, 18th, 

 21st. Halo, lunar, 12th. Halo, solar, 2d, 12th. Rainbow, 16th. Sleet, 17th, 

 20th, 21st, 27th, 28th. Thunderstorms, 3d, 6th, 8th, 16th, 17th, 18th. 



