METEOROLOGICAL OBSERVATORY 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE 



Latitude, 42° 2,3' I.S.o" N. Lonoitnde, 72° :)\' 10" W. 



Height of instruments above ground^ 51 ft. Above sea level, 260 ft. 



BULLETIN No 39. 



MARCH, 1892. 



MONTHLY SUMiVlARY. 



Pressure. In iiiclies. 

 Actual maxiniiini reading, . . ."50. IG, •2-2(1, it a- 

 Actual minhnum reading, . . 28.9!), 19th, 9 a. 



Mean reduced to sea level ■29.?95 



>[onthly range, 1.17 



*Air Temperature. In Degrees Fahr. 



Highest, 58 ; 60.5 



Lowest l(i. ; (>. 



Mean, :!:?.]; Ml. 4 



Monthly Range, 42. : .54..') 



Highest mean daily, 44.7; 4;5.;i 



Lowest mean daily, 20.."); 20 S 



Mean niaxinuim, ;i9.3;41.4 



Mean minimum, 26.4;21..5 



Mean daily range, 12.9; ]9.9 



Greatest daily range, 30. ; ;?8. 



Least daily range, 3..t; 10. 



ffumidity. 



Mean dew point, 21. n 



Mean for('e of vajjor, 2040 



Mean relative humidity, fU.l 



Wind. , 

 Prevailing Diredions. 



Xorth, IS (ler cent. 



Xorth West, 18 " 



Xorth North East, 14 " " 



West Xorth We.^it 10 " " 



Other directions 40 " " 



Total movement, 7046m. 



Greatest daily movement, .... 43G m., 2d. 



Least daily movement, .")('m., 8th. 



Mean daily movement, 227.3 m. 



Mean luuirly velocity, 9..') m. 



Maximum pressure per scjuare foot,20ill)s.= 

 64 m. per hour, 11th, at 3-30 p. 



* Frecipitfiiiou. In inches. 



Total precipitation, 1.03:2.40 



Went her. 



Mean cloudiness observed, . . . 4.") per cent. 



Xumber of clear days 15 



Number of fair days, .5 



Xumber of cloudy days, 11 



Total cloudiness recorded by the Sun Ther- 

 mometer, . . . 173 hours or 47 per cent. 

 Xumber of days on which .01 inch or more 



rain or meltecl .<now fell S 



Xumber of inches of snow on the ground at 

 the <'lose of the month, 



Bright Sunshine. 



Xumber of Iloin-s recorded, liMj 



Bnin. 8th, 10th, 18th, 23d. 



Sno^r, . l.st, 2d, :3d, llth, 12th, ]8th, 19th, 23<1. 



Total fall in inches, 8. 



Hull, 8th. 



Aurora Jioreniis, Oth, 24th, 2.5th. 



MeanO-:one, 40 per cent. 



Hill OS. 



Solar, oth, loth, 17tli, 22d. 



Lunar, 17th. 



Corona, 12th. 



Gules, oiiM ormore miles per hour, . G4, llth, 

 W. : .')(). 1-Jth, W. ; .59, 14th, W. X. W. ; .50, 

 1.5th, W.N.W.: 02, 19th, W.; d7,20th,S.W. 



*The lirst figures ilenotc readings at top of tower, the ser-ond at base. 



