TWENTY-FIRST ANNUAL YEAR BOOK— PART VIII 653 



NOVEMBER. 

 The mean temperature for the State as a whole averaged less than 

 one half degree above the normal the excess being confined to the northern 

 and central divisions, though there were small areas in both these di- 

 visions with the temperature below normal. Most of the first week was 

 above normal, but on the 10th the first cold wave of the season spread over 

 the State and the temperature remained below normal till the 17th, when 

 a decided change to warmer occurred and during the rest of the month 

 mostly mild weather prevailed. The first part of the month was favorable 

 for farm work and good progress was made in gathering corn until the 

 19th, when the fields became too soft for wagons. As a result of this 

 unfavorable condition only 77 per cent of the corn crop had been gathered 

 at the end of November while the usual amount at this time is 90 per cent. 

 However this warm weather and an ample supply of moisture was favor- 

 able for winter grain, which made good growth, and at the end of the 

 month was well established. The weather was also favorable for harvest- 

 ing sugar beets which was completed before the close of the month. The 

 maximum temperature for the State was 71° and the minimum 5°, making 

 an absolute range of 66° which is the least ever recorded since state wide 

 records began in 1890. 



Precipitation was evenly distributed throughout the month with an 

 average of 8 rainy days for the State, which has been exceeded but once 

 in November in 31 years. The per cent of sunshine was decidedly below 

 normal and the number of cloudy days is the greatest in the history of 

 the State. 



Pressure. The mean pressure (reduced to sea level) for the State was 

 30.16 inches. The highest recorded was 30.82 inches, at Sioux City, on the 

 12th, and the lowest was 29.54 inches, at Davenport and Dubuque, on the 

 21st. The monthly range was 1.28 inches. 



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

 records of 93 stations was 35.4°, or 0.4°, higher than the normal. By 

 divisions, three tiers of counties to the division, the means were as fol- 

 lows: Northern, 33.5°, or 0.7° higher than the normal; Central, 35.7°, or 

 0.1° lower than the normal. The highest monthly mean was 39.2°, at Bur- 

 lington and Keokuk, and the lowest was 32.4°, at Payette and Sanborn. 

 The highest temperature recorded was 71° at Oskaloosa, on the 19th, and 

 Fairfield, on the 20th, and the lowest was 5°, at Sanborn, on the 11th, 

 West Bend on the 12th and Earlham on the 16th. The temperature range 

 for the State was 66°. 



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

 84 per cent and at 7 p. m. 73 per cent. The mean for the month was 78 

 per cent or 2 per cent above normal. The highest mean was 81 per cent at 

 Charles City, and the lowest was 72 per cent, at Keokuk. 



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

 records of 98 stations, was 2.18 inches, or 0.67 inch above the normal. By 

 divisions the averages were as follows: Northern, 2.69 inches, or 1.28 

 inches greater than the normal; Central, 2.23 inches, or 0.70 inch greater 

 than the normal; Southern, 1.62 inches, or 0.04 inch greater than the 



