BULLETIN No. 263. 



NOVEMBER, 1910 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



Latitude, 42° 23' 48.5" N. Longitude 72* 31' 10" W. 



Height of barometer above ground, 5^ ft- Above sea level, 2yj.^ ft. 

 Height of Wind Instruments 72 ft. 



MONTHLY SUMMARY. 



Pregsure. In inches. 



Maxuniiiu reduced to freezing, 30 09, ist, 8 A- 

 Mininiiini reduced to freezing, 29.07, 30th, 12 p. 

 Reduced! maximum reading, 30.40, ist, 8 A. 

 Reduced! minimum reading, 29.3S, 30th, 12 p. 



Mean semi-daily reduced, 29.799 



Montlily range 1.02 



*Air Temperature. In Degrees Fahr. 



Highest, 61.0, 2d, i p. 



Lowest 15.0, 2ist, 7A 



Mean iiourly, 36.4 



Mean of means of max. and min., . . . .37.1 



Mean sensible (wet bulb), 32.5 



Monthly range, 46.0 



Highest mean daily 47.0, 2d, 5th 



Lowest mean daily, 28.4, 20th 



Mean maxinuim, 44.2 



Mean minimum, 29.9 



Mean daily range, 14.3 



Greatest daily range, 34.5, ist 



Least daily range, 3.5, 29th 



Utitnidlty. 



Mean dew point 28.2 



Mean force of vapor, 205 



Mean relative humidity, 78.7 



Precipitation. In inches. 



Total precipitation, 3.69 



Number of days on which .01 inch or more 



rain fell, • 8 



Total snow in inches 4 



♦Temperature in ground shelter, 

 t Reduced to freezing and sea-level. 



Wind. 



Total movement, 5215m. 



Greatest daily movement, . . . .468™., 27th. 



Least daily movement, 47ni., ist. 



Mean daily movement, 174.0 m. 



Mean hourly velocity, 7.2 m. 



Maximum pressure per square foot, 7.5 lbs.= 



39ni. per hour, 27th, 11 A., N. 

 Maximum velocity for 5 minutes, 30m. per 



hour 27th, II A., N. 

 Prevailing Direction, Northwest. 



Summary. 



North 23 percent. 



West Northwest 20 



Northwest 10 



North Northwest 10 



South Southwest 10 



Other directions 27 



Weather. 



Mean cloudiness observed, .... 68 per cent. 

 Total cloudiness recorded by the Sun Ther- 

 mometer, i56hrs.=53 per cent. 



Number of clear days, 5 



Number of fair days, 15 



Number of cloudy days, .10 



Brigfit Snnshine. 



Number of hours recorded, . . 137 hrs.=47?{ 

 Rain, 2d, 3d, 4th, 9th, loth, nth, 22d, 25th. 

 Snow 8th, nth, 12th, isth, 25th, 29th, 30th. 

 Gales, 35 or more miles per hour : 36m, 4th, 

 N. ; 39m, 27th, N. 



