>0 



Agkiculthuu. .Manual 



The accompanying graph (Fig. L8) shows the seasonal varia- 

 tion of possible sunshine for the latitude of Ithaca, N. Y., the 

 figures at the bottom indicating (he total number of hours of pos- 

 sible sunshine in each month. 



The actual amount of sunshine in hours is recorded automati- 

 cally at eight weather bureau stations in the state, and from the 

 data thus obtained average daily and monthly values have been 

 computed. These values may be expressed in two ways, namely, 

 in hours of actual sunshine per day or month, or in percentage of 

 the possible. The following table gives the. average percentage of 

 possible sunshine by months for the eight weather bureau sta- 

 tions having automatic record- arranged in order of annual values. 

 The total number of hours of actual sunshine at any station for 

 any month may be obtained approximately by multiplying the 

 total hours of possible sunshine for the month, as given at the 

 bottom of Fig. 18, by the appropriate monthly percentage. 



Stxsiitxk — Percentage of Possible 



Stations 



Jan. 



Feb. 



Mar. 



Apr. 



May 



June 



July 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



An- 

 nual 



New York City 



Rochester 



Syracuse* 



Albany 



Buffalo 



[tinea* 



Binghamton. . 



60 

 29 



34 

 35 



:<s 

 23 

 33 

 29 



62 

 40 

 42 

 48 

 47 

 40 

 41 

 39 



62 

 48 



50 



sa 



51 

 48 

 42 

 44 



64 

 53 

 50 

 50 

 51 

 49 

 42 

 44 



62 

 59 

 56 

 54 

 49 

 55 

 50 

 46 



66 

 66 

 66 

 63 

 56 

 61 

 58 

 53 



72 

 73 

 66 

 65 

 59 

 67 

 56 

 53 



(12 

 68 

 60 

 62 

 54 

 02 

 58 

 47 



63 

 63 

 50 

 55 

 47 

 57 

 56 

 43 



63 

 55 

 43 

 46 



48 

 49 

 42 

 40 



59 

 31 

 34 

 28 

 34 

 30 

 31 

 23 



52 

 25 

 30 

 28 

 34 

 25 

 26 

 22 



62 

 51 

 49 

 48 

 47 

 46 

 45 

 40 



* Average of 8 years, 1912-1919; other stations, 8 years, 190.5-1912. 



For the state as a whole, sunshine and cloudiness during day- 

 light hours are about evenly divided, except for the Atlantic 

 Coast division, where the average hours of sunshine is about 60 

 per cent of the possible. There is less sunshine over the south 

 centra] counties than elsewhere in the state, Binghamton enjoying 

 tie- distinction of having only about 40 per cent of the possible. 



In the amount of sunshine New York ranks considerably below 

 the central and western states. It lies well within what may be 

 called the eastern cloudy belt, which includes the northern 

 Appalachian Mountains, the Great Lakes region, and northern 

 New England. 



