79 



o 

 Monthly and Annual Mean Surface Water Temperatures, F 



o o 



BALTIMORE, MARYUND 39 16'N. 76 35 'W. 



Year Jan. Feb. Mar. Apr. May June July Aur. Sept. Oct. Nov. Dec . Ann. 



Foot of South Street 



1873-Oct. 1879, incl., readings at 3 p.m. 

 Nov. 1879-June 1871 incl., readings at 1 p.m. 

 July 1881 etc., readings at 2 p.m. 



Source - USCFF 



65.9 - 43.3 - 



65.4 51.1 41.6 - 



67.3 49.2 42.6 (57.3) 

 64.0 50.0 37.9 58.6 



71.2 56.9 - (57.8) 



66.0 54.0 37.5 (57.1) 



50.2 41.8 (57.0) 



67.4 51.5 - (57.2) 

 63.7 53.2 40.3 56.4 



66.6 52.9 37.5 57.1 



(9) (9) (8) 



66.4 52.1 40.3 57.5 



