METEOROLOGICAL OBSERVATORY 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE 



Latitiule, 42'^ 23' 48.5" N. Longitude, 72° 31' 10" W. 



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



BULLETIN No 44, 



AUGUST, 1892. 



MONTHLY SUMMARY. 



Pressure. In inches. 

 Actual maxinnnn reading, . . 29.96, •23ril,9 a. 

 Actual niininium reading, . . 29.41, 25th, 5 v. 



Mean reduced to sea level, 30.017 



Monthly range, 55 



*A.ir Temperature. In Degrees Fahr. 



Highest, 89; 94. 



Lowest 54. ; 50. 



Mean, 70.1; (W.9 



Monthly Range, 35.;-44. 



Highest mean daily, 79.5 ; 80. 



Lowest mean daily, .57. ; 5S. 



Mean maximum, 78.2; 80.0 



Mean minimum, 02.3;. 57.2 



Mean daily range, 15.9; 23.4 



Greatest daily range, 20. ; 35. 



Least daily range, 4.5; 10. 



Hutniflit}/. 



Mean dew point 02.1 



Mean force of vapor 7765 



Mean relative humidity 74.9 



Wind. 



Prevailing Directions. 



North, 17 percent. 



Southwest, 15 " 



North, NorthEast 11 " 



SouthEast, 9 " 



Other directions, 48 " 



Total movement, 3390 m- 



Greatest daily movement 248 m., 27th. 



Least daily movement, 37 m. 3rd,. 



Mean daily movement, 109 m- 



Mean hourly velocity 4.5 m. 



Maximum pressure per square foot, 73lbs.= 

 39 m. iier hour, 19th, at 4-30 P. 

 * Precipitation. In inches. 

 Total precipitation 5.23; 6.475 



Weather. 



Mean cloudiness observed, . . . .53 per cent. 



Number of clear days, 6 



Number of fair days, 14 



Number of cloudy flays, 11 



Total cloudiness recorded l)y the Sun Ther. 



mometer, . . . 227 hours or 53 per cent. 

 Number of days on which .01 inch or more 



rain fell, IG 



Jtrifflit Sunshine. 



Number of Hours recorded, 201 



Ilain, lst,2nd, 3rd, 4th, .5th, 6th, 9th, 11th, 



12th, 13th, 19th, 20th, 25th, 26th, 27th,31st. 

 Thunder and IJghtnino, 4th, 0th, 10th, 



11th, 12th, 19th, 20th, 22n(l, 2rith. 

 Mean Ozone, 30 per cent. 



ndlos. 



Lunnr, 6th. 



Corona, 31st. 



<?rtfc.«,of 35 ormore miles perhour, . . . . 0. 



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



