27 



Monthly and Annual Mean Surface Water Temperatures, F 



o o 



GLOUCLSTER, MASSACHUSETTS 42 36'N. 70 39''V. 



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



55.7 U.l 38.9 - 

 51.6 42.9 35.3 48.2 



52.1 46.4 38.6 48.4 



49.0 43.6 32.9 (46.7) 



47.8 a.4 34.9 (47.0) 



53.0 44.2 36.0 48.0 



53.1 45.7 39.9 (49.1) 



44.9 46.4 39.4 47.6 



52.2 44.0 39.9 48.1 

 50.6 45.9 - (46.8) 

 51.2 47.2 42.9 - 



46.7 37.4 - 



41.9 - 



(12) (10) (9) (10) (10) (10) (9) (10) (9) (11) (12) (12) 

 Mean 34.3 33.0 35.0 40.8 49.7 57.7 66.7 66.5 60.0 51.0 44.9 38.2 48.1 



Gloucester Harbor Fort Wharf. Sept, 1883, East Gloucester; June 1885, Gloucester; 

 Jan. 1888, East Gloucester; April 1888 Hatcheiy 



Readings at first high water and first low water after 7 a.m. until April 1888, thence 

 at 7 a.m., 12 m. and 5 p.m. 



Source - DSCFF 



