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BULLETIN No. 4 19. 



NOVEMBER, 1923 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



ACtHICULTUIUL EXPElilMENT 



STATION. 



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



Hcii;ht 0/ /hi ro meter above ground, Ji ft. Above sea level, 2yj.^ ft. 

 Height oj Wind Instruments 72 ft. Time used, y^th Mer. 



MONTHLY SUMMARY. 



Pressuie. In inches. 

 Maximum reduced to freezing, 30.30, 2d 8a 

 Minimum reduced to freezing, 29.04, 7th. 3 p. 

 Reduced maximum reading, 30.62. 2d Sa. 



Reduced minimum reading, 29.34, 7th, 3P. 



Mean semi-daily reduced 30.068 



Monthly range i.28 



Air Teiupernture. In Degrees Fahr. 



Highest 66.5,4th, 4? 



Lowest 21.0, 2d, 6:30A 



20th, 3:30 A. 29th, 7:30 A. 



Mean hourly 39:1 



Mean of means of max. and min 39.S 



Mean sensible (wet bulb) 34. 8 



Monthly range 45.5 



Highest mean daily 48.0,6th 



Lowest mean daily 30.1, 19th 



Mean maximum 49.8 



Mean minimum 29 8 



Mean daily range 20.0 



Greatest daily range 43.5, 4th 



Least daily range 6.0, 7th 



Hnmidity. 



Mean dew point 31.2 



Mean force of vapor 22S 



Mean relative humidity 81,5 



PrecipitaUon. In inches. 



Total precipitation, in inches 5.0!?| 



Total snow, in inches i. 



Number of days on which .01 inch or more 



rain fell 10 



Days of sleighing 



Wind. 



Total movement 3379ni 



Greatest daily movement 256m, 21st 



Least daily movement iSm, i6th 



Mean daily movement 113m 



Mean hourly velocity 4.7ni 



Maximum pressure per square foot, 50.0 lbs= 

 32m per hour, 30th, 7?., S.S.W. 



Maximum velocity for 5 minutes, 22m per 

 hour, 30th, 1; p., S. 



Prevailing direction. West, Southwest. 



Summary. 



South 23 per cent 



North Northaest 17 " " 



North 13 " " 



Southwest 13 " " 



South Southwest 10 " " 



Northwest 10 " " 



C)ther directions 14" " 



Weather. 



Mean cloudiness observed .... 48 per cent 

 Total cloudiness recorded by the Sun 



Thermometer . . 145 hours = 49 per cent. 



Number of clear days 7 



Number of fair days 1 1 



Number of cloudy days 12 



Britiht Sunshine. 



Number hours recorded, 1^3 =51 percent. 

 Kain, 6t7h, 7th, 8th, gth, nth, 18th, 22nd, 

 2';rd, 24th, 25th, 27th, 30th. 



Snow 8th, 9th, 24th, 25th 



Frosts, before the i6th. ist, 2d, 3d, 4th, 5th, 



9th, lost, nth, 13th. 

 Gales, none. 



