79 



o 



Monthly and Annual Mean Surface Water Temperatures, F 



o o 

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



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



(9) (10) (10) (7) (9) (8) (9) (10) (8) (9) (9) (8) 



Mean 35.3 36.6 41.1 50.4 63.3 73.0 78.8 78.9 74.0 66.4 52.1 40.3 57.5 



Foot of South Street 



1873-Oct. 1879, Inol., 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 



