BULLETIN No. 332. 



AUGUST, 1916 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



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



Heii^ht of barometer above ground, ^ I ft. Above sea level, 2yj.^ ft. 

 Height oj Wind Instruments 72 ft. 



MONTHLY SUMMARY. 



Pressnie. In inches. 

 Maximum reduced to freezing, 29.97, 29th, 9 A 

 Minimum reduced to freezing, 29.23, 8th, i p 

 Reducedt maximum reading, 30.27, 29th, g A 

 Reducedt minimum reading, 29.51, 8th, i p 



Mean semi-daily reduced 29.977 



Monthly range 0.76 



*Alr Temperature. 



Highest 



In Degrees Fahr. 



. . 95.5, 22d, 3:30 P 



Lowest 45-0- 29th, 2 A 



Mean hourly 69.5 



Mean of means of max. and min 70.5 



Mean sensible (wet bulb) 64.0 



Monthly range 5° 5 



Highest mean daily 79-3- 22d 



Lowest mean daily 57-7 28th 



Mean maximum 82.6 



Mean minimum 5S.3 



Mean daily range 24-3 



Greatest daily range 35-°- 21st 



Least daily range 9.5, loth 



Humidity. 



Mean dew point 61.3 



Mean force of vapor 698 



Mean relative humidity . 80.7 



Precipitation. In inches. 



Total precipitation 2.49 



Number of days on which .01 inch or more 



rain fell 



* Temperature in ground shelter. 



t Reduced to freezing and sea-level. 



Wind. 



Total movement 3120 m 



Greatest daily movement 242m, 3d 



Least daily movement 41m, 21st 



Mean daily movement loi m 



Mean hourly velocity 4.2 m 



Maximum pressure per square foot, 20.5 lbs = 



64m per hour, 23d, 5 p, S.S.W. 

 Maximum velocity for 5 minutes, iSm per 



hour, 14th, 3 p, W. 

 Prevailing direction, South Southwest. 



Summary. 



North 10 per cent 



South Southwest 39 " " 



East Southeast 13 " '" 



South 10 " " 



Other directions 28 " " 



Weather. 



Mean cloudiness observed .... 54 per cent 

 Total cloudiness recorded by the Sun 



Thermometer . . 170 hours = 40 per cent 



Number of clear days 10 



Number of fair days 14 



Number of cloudy days 7 



Bright Sunshine. 



Number hours recorded, 259 hrs, = 60 per cent 

 Rain. 8th, 9th, nth, 12th, 13th, 23d, 26th, 27th, 



28th. 

 Thunder and Lightning. 8th, 23d, 26th, 



27th. 

 Gales, 35 or more miles per hour. 64m, 23d, 



S.S.W. I 40m, 27th, S.S.W. 



