THE CENTRAL BASIN OF TENNESSEE. 



93 



perature at Nashville is 59.6^ and for the seasons : spring, 59.3° j 

 summei', 78.4°; autumn, 59.7°; winter, 41°. 



A glance at the annexed table will show that the variations of tern- 

 perature are not very great, but comparatively uniform and that in 

 only one month in the year does the mean lowest temperature indicate 

 frost. The mean lowest teniperature is recorded as 30.1° for January 

 with the next 33.2° for December. 



The table 11. shews the dates at which frosts made their first and 

 last appearance and the average number of days free from frost within 

 the basin. 



I. Table shewing average temperatures at Nashville, Tennessee, (by 

 months) from January, 1871, to December, 1887, inclasi-\^e ; 

 from observations made by U. S. Signal Service. 



MOSTH, 



Highest and 

 Year 



January 



February 



March 



April 



May 



June 



July 



August 



September .... 



October 



November .... 

 December . . . . 



Average '71 -'87 



74. in 1879 ; 

 75.0 in 1875 ' 

 81.7 in 1882 | 

 90.0 in 1872 

 90.0 '74,79 

 99.0 in 1874 

 101.2 in 1881 

 104.0 in 1874 

 98.2 in 1881 



89.0 1879-81 

 80.6 in 1882 



77. 1 in 1873 



88.6 



Lowest 

 and 

 Year. 



-10. '84 

 -7. '86 

 11.0 '73 

 25.5 '75 

 37.0 '77 

 49.0 '77 

 56.3 '82 

 55.0 '79 

 41.0 '75 

 28.0 '73 

 13.0 '72 

 -2.0 '76 



24.7 



Mean 

 Daily 

 Range. 



Mean 



of 

 Highest. 



Mean 



of 

 Lowest. 



Mean 



Monthly 



Range. 



15.8 



45.9 



30.1 



58.9 



16.3 



50.2 



34.2 



55.3 



18.1 



58.3 



40.2 



52.3 



18.6 



68.9 



50.4 



49.5 



18.9 



79.2 



59.7 



44.7 



17.6 



85.1 



67.6 



37.8 



17.7 



89.0 



71.3 



34.4 



18.1 



86.9 



69.3 



35.6 



18.7 



80.4 



61.7 



43.6 



19.6 



70.8 



50.9 



48.9 



17.6 



56.9 



39.3 



52.6 



15.7 



48.4 



33.2 



54. 



17.7 



68.3 



50.7 



47.2 



38.6 

 43.1 



48.9 

 59.6 

 69.4 



77. 



80.1 



78.2 



70.6 



60.5 



47.9 



41.4 



59.6 



