.696 .KANSAS WE A THEM REPORT. 



METEOROLOGY. 



KANSAS \A^EATHER REPORT, DECEMBER, 1877. 

 BY PPOF. r. H. SNOW. 



Station — Lawrence, Kansas, corner of Tennes^see and Pinckney streets ; 

 elevation of barometer and the thermometer 875 feet ab9ve the sea level and 

 fourteen feet above the ground ; anemometer on the University building, 

 105 feet above ground. 



The month was remarkable for its high temperature and excessive 

 cloudiness. 



Mean temperature 44:°.4o, which is 5°. 20 above that of ISTovomber, and 

 16°. 31 above the December avei-age of the nine preceding years. The next 

 warmest December on our record was in 1875, with mean temperature 39°- 

 ,35. There were only two days whose mean fell below the freezing point'; 

 in December, 1876, there were 24 such days. The highest temperature was 

 68°, on the i2th ; the lowest was 10°, on the 1st : range of temperature, 58° 

 Mean at 7 a. m., 38°.79 ; at 2 p. m , 51°. 22 ; at 9 p. m., 43°. 87. 



Rain and melted snow, 2.21 inches; which is 0.36 inches above the De- 

 cember average. Either rain or snow fell on ten days. The entire depth of 

 snow was only half an inch, which fell on the 29th ; there were snow flur- 

 ries on the 5th. There were two thunder showers — on the IGth and 17th, 

 The total rainfall ior the year 1877 has been 41.09 inches. 



Mean cloudiness, 58.17 per cent, of the sky, the month being 9.21 per 

 cent, cloudier than usual. Number of clear days, 12; (entirely clear, 4); 

 half clear, 5 ; cloudy, 14 (entirely cloud}^, 9). There were six entirely 

 cloudy days in succession. Mean cloudiness at 7 a. m., 64.84 per cent.; at 2 

 p. m., 59.03 per cent.; at 9 p. m., 50.64 per cent. 



Wind— S. W., 33 times, N. W., 2J times; S. B. 11 times ; N. E. 9 times ; 

 ]Sr., Stimes; S. 3 times ; B., twice ; W.., once ; calm twice. The entire dis- 

 tance traveled by the wind was 10,683 miles, which gives a mean daily 

 velocity of 34.6 miles, and a mean hourl}' velocity of 14.36 mile. The high- 

 est velocity was 45 miles an hour on the 29lh. 



'Mean height of barometer, 29.191 inches; at 7 a. m., 29.208 in.; at 2 p. m., 

 29.167 in.; at 9 p. m., 29.196 in.; maximum, 29.575 in., on the 8th ; mini- 

 mum, 28.596 in., on the 4th; monthly range, 0.979 in. 



Relative humidity — Mean for the month, 74.4; at 7 a. m., 83.12 , at 2 p. 

 m., 62.3; at 9_p. m., 78.8. Greatest 100, on seveial occasions ; least, 30.7 at 

 2 p. m., on the 2d. There was no fog. 



The following is a copy of a portion of the dull}- record of temperature, 

 direction and velocity of wind, face of sky, humidity and rainfall : 



