8 BULLETIN 636, U. S. DEPARTMENT OF AGRICULTURE. 



Table I. — Dates of spring and fall frosts, annual rainfall, and mean annual temperature 



at Payette, Idaho. 



[Altitude, 2,159 feet.] 



Year. 



Last 

 frost in 

 spring. 



First 



frost in 



fall. 



Annual 

 precipi- 

 tation. 



Annual 

 temper- 

 ature. 



Highest tempera- 

 ture. 



Lowest tempena- 

 ture. 





Degrees. 



Date. 



Degrees. 



Date. 



1900 



Apr. 13 

 June 4 

 May 1 



Sept. 25 

 Oct. 16 

 Sept. 16 



10.60 

 13.50 

 14.04 



53.7 

 53.3 

 51.2 



104 

 106 

 102 



July 30 

 July 23 

 June 23 



10 



5 



-13 



Dec. 31 



1901 



Feb. 8 



1902 



Jan. 28 



1903 a 





1904 



June 23 

 May 21 



Oct. 16 

 Oct. 8 



18 

 8.86 



52.1 

 51.2 



107 

 111 



Aug. 13 

 July 23 



- 3 



- 2 





1905 



Feb. 11 



1906 a 





1907 



May 2 

 Apr. 29 

 May 17 

 Apr. 6 

 Apr. 16 

 May 18 

 May 17 

 June 5 

 May 4 



Sept. 14 

 Sept. 26 

 Sept. 18 

 Sept. 29 

 Sept. 26 

 Sept. 16 

 Sept. 18 

 Oct. 24 

 Sept. 14 



9.95 

 7.52 



10 



10.38 

 9.74 



13.15 



14.26 

 5.90 

 9.67 



51.3 

 50.7 

 50.6 

 50.1 

 48.9 

 48.4 

 48.9 

 50.3 

 50.9 



103 

 108 

 104 

 107 

 104 

 101 

 102 

 103 

 103 



Aug. 1 

 July 31 

 July 22 

 July 13 

 July 17 

 ...do 

 Aug. 24 

 Aug. 14 

 July 22 



- 1 

 5 



- 2 

 -26 



- 3 

 -23 



- 7 



- 8 



- 5 



Jan. 16 



1908 



Feb. 1 



1909 



Dec. 28 



1910 



Jan. 3 



1911 



Dec. 21 



1912 '. 



Jan. 8 



1913 



Jan. 6 



1914 



Dec. 8 



1915 



Dec. 30 







Average (14 years). . . 



May 10 



Sept. 28 



11.11 



50.8 



104.6 



July 29 



- 5.2 



Jan. 10 



a Data incomplete. 

 FARM ORGANIZATION. 



The Payette Valley is a comparatively old and established farm- 

 ing section. It is one of general farming, although fruit occupies an 



Fig. 4.— A large alfalfa field near Payette at the time of harvesting the third crop. Alfalfa often yields 



8 tons per acre in this region. 



important place in its agriculture. (See fig. 3.) The fruit areas 

 are limited and for the most part are located near a few shipping 

 stations. The average size of the farms included in this investigation 



