IX 



BULLETIN No. 458. 



FEBRUARY 1927 



Meteorological Observations 



^"^ ■^•"'- LIBRARY Of THE 



MASSACHUSETTS Ua^sacln^elt*^ A^^kuiinral 



AGRICULTUIUL EXPElllML^T'''*'"" 



STATION. 



Latitude, 42» 23' 48.5" N. Longitude 72* 31' lo" W. 



Iffi^/if ofharomder above ground, ^r ft. Above sea level, 27 j.^ ft. 

 Height oj Wind Ijistniments 72 ft. Time used, j^th Mer. 



MONTHLY SUMMARY. 



Pressure. In inches. 



Maxinuim reduced to freezing, 30.12, sth, 10 a 

 Mininumi reduced to freezing, 29.08, 3d, 12 v 

 Reduced niaxinuini reading, 30.45, 5th, 10 A. 

 Reduced minimum reading, 29.39,3d, 12 p 



Mean semi-daily reduced 30.040 



Monthly range 1.06 



Air Temperature. 



In Degrees Fahr. 



Highest Sj.o, 24th, 4:30 p. 



Lowest 7.0, 5th, 6 A. 



Mean iiourly 28.2 



Mean of means of max. and min 28.7 



Mean sensible (wet bulb) 26.3 



Monthly range 48.0 



Highest mean daily 37.5, 24th 



Lowest mean daily 13.9, 5th 



Mean maximum 36.3 



Mean minimum 21.0 



Mean daily range 15.3 



Greatest daily range 28.0, 24th. 



Least daily range 5.5, i7tli 



Humidity. 



Mean dew point 23.3 



Mean force of vapor 155 



Mean relative humidity 85.3 



Precipitation. In inches. 



Total precipitation, in inches 2.62 



Total snow, in inches 12 



Number of days on which .01 inch or more 



rain fell 10 



Days of sleighing 26 



Wind. 



Total movement 



4366 m 



per cent 



Greatest daily movement 506m, 4th 



Least daily movement 22m, 24th 



Mean daily movement i56ni 



Mean hourly velocity 6.5ni 



Maxinuim pressure per square foot. 45.0 lbs = 



951" per hour, 3rd, 9 p., S. S. W. 

 Maximum velocity for 5 minutes, m 42per 



hour, 4th, I A., W. 

 Prevailing direction, West 



Summary. 



North 



West 



West Northwest 18 " " 



.Southwest 1 1 " " 



Other directions 32 " " 



Weather. 



Mean cloudiness observed . . . . 66 per cent 

 I'otal cloudiness recorded by the Sun 



Thermometer . . 186 hours = 63 per cent 



Number of clear days 2 



Number of fair days 14 



Number of cloudy days 12 



Briiiht Sunshine. 



Number hours recorded, iio=- 37 per cent. 



Itain.Sd, i6th, l8th, 25th, 26th. 



Snow, nth, 13th, 14th, 16th, i9tli, 20th, 



2ist, 25th. 

 Gales. 49m, 2d, W.N.W.:9;m, 3d, S. S. W.; 



57m, 4th, \V.: 3Qm, 7th.W.N.\\'.; 41m, 12th, 



W.; 37m, 17th, N. W.; 44m, iStii, N.; 



37m, 19th, N.E.; 57m, 20st N. E. 



