BULLETIN No. 298. 



OCTOBER, 1913 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGKICULTURAL EXPERIMENT 



STATION. 



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



Height of barometer above ground^ 51 ft- Above sea levels 273'5 fi' 

 Height of Wind Instruments 72 ft. 



MONTHLY SUMMARY. 



Pregsure, In inches. 



Maximum reduced to freezing, 3021,23d, 8 A. 

 Minimum reduced to freezing, 2S.85, 20th, gp. 

 Keducedt maximum reading, 30.52, 23d, 8 A. 

 Reducedt minimum reading, 29.14, 20th, 9 P. 



Mean semi-daily reduced, 29.970 



Montiily range, 1.38 



*Air Temperature. In Degrees Fahr. 



Highest, 79.0, loth, 4P. 



Lowest, 24.5, 31st, 12 p 



Mean hourly, 54.7 



Mean of means of max. and min., .... 55.5 



Mean sensible (wet bulb), 50 3 



Monthly range, 54-5 



Higiiest mean daily, 68.0, loth 



Lowest mean daily, 33-S, 31st 



Mean maximum, 63.5 



Mean minimum, 47.5 



Mean daily range, 16.0 



Greatest daily range, 3i-0, 23d 



Least daily range, 4-5, ist 



Humidity. 



Mean dew point, 46.5 



Mean force of vapor, 424 



Mean relative humidity, 79.2 



Wind. 



Total movement, 4698m. 



Greatest daily movement,. . . . 490m., 21st 



Least daily movement, I3ni., 9th 



Mean daily movement 151 m 



Mean hourly velocity, 6.3 m 



Maximum pressure per square foot, 23.0 lbs. = 



68m. per hour, 14th, ip., N.N.E. 

 Maximum velocity for 5 minutes, 36m. per 



hour. 20th, 8p., S.S.W. 

 Prevailing Direction, North. 



Summary. 



North 26 per cent. 



North Northeast 16 " " 



Northwest 10 " " 



Other directions 48 " " 



Weather. 



Mean cloudiness observed, .... 63 per cent. 

 Total cloudiness recorded by the Sun Ther- 

 mometer, 25ohrs. = 73 per cent. 



Number of clear days, 3 



Number of fair days, 10 



Number of cloudy days, 18 



Bright Sunshine. 



Number of hours recorded, . . 91 hrs=27lt. 



Kain,ist,2d, 7th, 8th, 9th, nth, 12th, 13th 



14th, 15th, iSth, 19th, 20th, 24th, 25th, 26th, 



27th, 28th, 3otli. 



Snow, 31st. 



Hail, 14th. 



Frosts, 22d, 23d, 31st. 



Thunder and Liglitning, none. 



Precipitation. In inches. 



Total precipitation, 5-i6 



Number of days on which .01 inch or more 



rain fell, • ijlGales, 35 or more miles per hour: 68m, 14th, 



Total snow in inches TracelN.N.E.; 44m, 20th, S.S.W. ; 35m, 21st, W.S.W. 



*Temperature in ground shelter, 

 t Reduced to freezing and sea-level. 



