METEOROLOGICAL OBSERVATORY 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



LiititiuUs 1-2^ -i.-V 4.^.0" N. Longitude, 72° 31' 10" \V. 



Height of i7istniments above ground, 51 ft. Above sea level, 260 ft. 



BULLETIN No 66. 



JUNE, 1894. 



MONTHLY SUMMARY- 



Press live. In iii(;lies. 



Ai-,tual inaximuin reading, . ."{0.05, 14tli, S a. 

 Actual niininmm reading, . iU.SO, 21st, 7 a. 



Mean ri'clucerl to sea les'el, 9.997 



Monthly range 75 



*Air Tfini>ri-fit4ire. In Degrees Fahr. 



Highest 92 ; 95. ; 17th 



I^owest 4:^ ; 37.5 •^th 



Mean 69.4; 67.8. 



Monthly Range 49.; 5.i.5 



Mean daily movement, fil.3 m. 



Mean hourly velocity, '2.5 ni. 



Maximum i)ressure per square foot, 4 lb8.= 

 5:i ni. per hour, '2d, at 4-30 p. m. 



* Pvecipltation. In inches. 

 Toial precipitation ]. 09; 3.13 



Weather. 



Mean cloudiness observed. 



54 per cent. 



g.j'c). -^5 Number of clear days 5 



^,="^'.'5.2 5 Nundier of fair days, 9 



rain fell, 7 



Highest mean daily, - xt 1 *r ■ 1 n 



Lowest mean daily -,r: 4 . 5.3 5 Number of fair days, 9 



Mean maximum," 793; 79.G Ni'm'er of cloudy days, 16 



Mean minimum 59.4- .^(i. Total cloudiness recorded by the Sun Ther- 



Mean dailv ransre ......... 19.8- ''2".(;! mometcr, . . . 306 hours or 63 percent. 



Greatest dail'v r;iii"-e . . . . . . . 31' ;";>it.|^^ii"i''<^'' f>f days on which .01 inch or more 



Le.ast daily range 9. ; 1'2 



ITiniiiditi/. liright Siiuahine. 



Mean <lew point, •^7.9;^;"V''^'' "f/^o''^^?-eVOV'e''', SA,; •,„;,- 



Moin forre of v.i.m- ISm^^'""' ■ ■ l*^t,'2nd,3rd,4tli, ith, IStli, I9th, 



"^•^" '^"•*'^ ""^ '•''""' '^"'^ -2 1 s t, 24th ,2(ith, -27^1, 30th. 



Mean relative humiilitv, (jS.l „ ., 



Hail, 



Thunder and Liyhfuing, I8th, 19th, 



Whi</. 



Prevailing Directions. 



South West '27 percent. 



South. . -21 " " 



West, 11 " " 



North West, II " " 



Other directions 30 " " 



Total movement, 1838 ni. 



Greatest daily movement, . . . 104 m., 27th. 

 Least flaily movement, 10 ni.; 12th. 



3flth. 

 Mean Osone, 17 per 



Liinai' 



Gales, of :!5 or more miles i)er hour, 53 

 S.S.E.; 35, 3rd,N.W. 



. 180 

 '20tli, 



2nd. 

 27th, 



14th. 

 ,2nd, 



*The first figures denote reailings at top of tower, the second at base. 



