98 



Lake Maxinkuckee, Physical and Biological Survey 



AVERAGE AIR TEMPERATURES FOR THE MONTH OF JUNE 



July 



Sky: — The records for July are fairly complete for only 3 years 

 and accordingly do not admit of the cheeking up and balancing 

 which is possible where we have more years to compare. It may 

 briefly be observed that the clear periods were somewhat in ex- 

 cess of the cloudy ones for the years under observation and that 

 the south winds were somewhat more common than those from 

 any other direction. The calm periods were surprisingly few. 



Winds: — Northeast, west and northwest winds were the least 

 frequent, the prevailing wind being from the south. Periods of 

 calm were rather infrequent. 



Storms: — Compared with other months, showers were rather 

 frequent; of fairly complete records of 34 months, we have only 

 six that equal or exceed that of this particular month. 



Temperatures: — The total number of temperature records for 

 July is 330, as follows : 93 in 1899, 93 in 1900, 26 in 1902, 93 in 

 1903, 24 in 1906, and 1 in 1910. 



The lowest temperature recorded for this month was 54° on 

 July 1, 1902; the highest was 103° on July 1, 1910. The extremes 

 for each year were as follows : 



1899, 58° on July 8 and 89° on July 21; range 31°. 



1900, 60.5° on July 1 and 9, and 92° on July 4; range 31.5°. 

 1902S 54° on July 1 and 90° on July 7 and 27; range 36°. 

 1903, 60° on July 15 and 16, and 91° on July 3 and 4; range 31°. 

 1906= 60.5° on July 31 and 94° on July 23; range 33.5°. 



Our records show no freezing temperature for July. 

 The greatest daily range was as follows : 



July 12, 21 and 24, 1899, from 71°, 73° and 71°, respectively, 



to 87°, 89° and 87°, respectively, or 16°. 

 July 14 and 28, 1900, from 71° and 64°, respectively, to 88° 



and 81°, respectively, or 17°. 

 July 24, 1902, from 65° to 88°, or 23°. 

 July 2, 1903, from 68° to 88°, or 20°. 

 July 31, 1906^ from 60.5° to 84°, or 23.5°. 



^ Records for only 11 days. 

 - Records for only 9 days. 

 ' Records for only 9 days. 



