8 



CIRCULAR 870, U. S. DEPARTMENT OF AGRICULTURE 



Table 2 — Monthly mean air temperature at San Joaquin Experimental 

 Range, November 1934- August 1948 



Year 



Sept. 



Oct, 



Nov. 



Dec. 



Jan. 



Feb. 



Mar. 



1934-35 



°F. 



°F. 



°F. 



52.1 



47.3 



51.7 



52.1 



47.6 

 52.9 

 48.0 

 50.0 



49.2 

 50.7 

 48.6 

 49.0 



45.7 

 44.9 



45.1 

 44.8 

 42.3 

 46.5 



45.2 

 47.8 

 47.7 

 44.5 



42.3 

 45.0 

 45.5 

 45.0 



43.3 

 40.5 



°F. 



44.5 



47.0 



36.1 



43.6 



42.7 

 46.5 

 46.5 

 44.2 



42.5 

 44.2 

 41.1 

 40.5 



37.1 

 45.7 



°F. 

 47.4 

 48.5 

 46.7 

 48.3 



42.5 



49.0 

 50.5 

 44.2 



47.1 

 44.4 

 47.3 

 44.1 



47.9 

 43.9 



°F. 



47 1 



1935-36 I 



76.3 

 75.5 

 73.7 



75.0 

 74. 5 



68.4 

 67.4 



69.4 

 73.0 

 73.8 

 73.6 



71.7 



74.8 



60.6 

 64.7 

 64.4 



60.2 



60.2 

 61.8 

 56.8 



61.9 

 60.3 

 63.9 

 63.6 



55.8 

 61.4 



54 3 



1936-37 



1937-38 



51.4 

 48 5 



1938-39 



51.5 



1939-40 



53.8 



1940-41 



53.1 



1941-42 



48.9 



1942-43 



1943-44 



1944-45 



1945-46 



51.8 

 50.3 

 46.8 

 49.1 



1946-47 



1947-48 



53.3 

 46.5 



14-year mean 



172.9 



1 61.2 



49.3 



44.7 



43.0 



46.6 



50.5 



Year 



Apr. 



May 



June 



July 



Aug. 



12-month 

 mean 



1934-35. __ 



°F. 



56.0 



60.0 



56.1 



55.9 



61.5 

 58.1 

 53.8 

 54.0 



56.9 

 53.1 

 56.6 

 58.8 



58.8 

 54.3 



°F. 

 65.0 



68.4 

 69.0 

 66.4 



67.1 

 69.1 

 66.2 

 60.4 



65.5 

 65.6 

 62.6 

 64.6 



70.2 

 60.1 



°F. 



77.5 



76.6 

 75.6 



76.7 



75.7 

 78.7 

 70.9 

 72.1 



67.2 

 68.9 

 74.0 

 71.7 



74.0 

 72.3 



°F. 



79.9 

 84.7 

 84.5 

 82.9 



81.9 

 78.5 

 81.5 

 81.6 



78.4 

 79.1 

 84.1 

 79.7 



76.9 

 78.1 



82.2 



83.5 

 82.5 

 80.0 



81.5 

 78.6 

 75.4 

 79.0 



74.1 

 78.0 

 78.3 

 79.5 



75.4 

 76.1 



°F. 



1935-36 



62.7 



1936-37 



61.3 



1937-38-- 



61.6 



1938-39____ 



61.0 



1939-40 



62.3 



1940-41 



60.3 



1941-42_ _. 



58.6 



1942-43 



1943-44- _. 



58.9 

 59.4 



1944-45 



60.2 



1945-46 



59.9 



1946-47 



59.2 



1947-48 



58.2 



14-year mean 



56.7 



65.7 



73.7 



80.8 



78.9 



!60.3 



1 13-year mean. 



The relative degree of herbage utilization — for example, close, moder- 

 ate, or light — in each of the six grazing-intensity pastures was rated each 

 year according to the amount of unused herbage left on the ground. 

 Ratings were made after the cattle were removed from the pastures, but 

 before the start of fall rains. The method used was to compare the grazed 

 range with standard photographs showing how the range looks with 

 different amounts of unused herbage. 



