BULLETIN No. 301. 



JANUARY, 1914 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



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



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

 Height of Wind Instriime?its 72 ft. 



MONTHLY SUMMARY. 



Pressure. In inches. 



Maximumieduced to freezing, 3022,29th, 3 a. 

 Miiiiinuin reduced to freezing, 28. 78, 25th, i A. 

 Reducedt maximum reading, 30.53, 29th, 3.=^. 

 Reducedt minimum reading, 29. oS, 25th, i a. 



Mean semi-daily reduced, 29.957 



Montiily range, 1-45 



*Air Temperature. In Degrees Fahr. 



Highest 52.0, 28th, 4P. 



Lowest, -i4-0i 14th, 8a. 



Mean hourly, 22.2 



Mean of means of max. and min., .... 22.4 



Mean sensible (wet bulb), 19 7 



Monthly range, 66.0 



Highest mean daily 4i-4, 3oth 



Lowest mean daily, -7-3< 13th 



Mean maximum, y.o 



Mean minimum, i3-8 



Mean daily range i7-2 



Greatest daily range 43-o. 23d 



Least daily range 4-o, 20th 



Humidity. 



Mean dew point 15 



Mean force of vapor 129 



Mean relative humidity, 81.4 



Precipitation. In inches. 



Total precipitation, 3-7 



Number of days on which .01 inch or more 



rain fell '14 



Total snow in inches 9-5 



Temperature in ground shelter. 

 Reduced to freezing and sea-level. 



Wind. 



Total movement 5442m. 



Greatest daily movement, .... 488m., 13th 



Least daily movement, 8m., i6th 



Mean daily movement, 176 m 



Mean hourly velocity, 7-3 m 



Maximum pressure per square foot, 20.0 lbs.= 



63m. per hour, 12th, 3P., W.N.W. 

 Maximum velocity for 5 minutes, 38m. per 



hour, i2th, 2P., W.N.W. 

 Prevailing Direction, North Northwest. 



Summary. 



North 23 per cent 



North Northeast 16 " " 



South Southwest 10 " " 



West 10 " " 



Northwest 16 " " 



Other directions 25 " " 



Weather. 



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

 Total cloudiness recorded by the Sun Ther- 

 mometer, i99his.=68 per cent. 



Number of clear days, 2 



Number of fair days, 10 



Number of cloudy days, 19 



Bright Sunshine. 



Number of hours recorded, . . 9; hrs=32^. 

 Rain, 4th, Sth, gth, loth, 24th, 25th, 29th, 31st. 

 Snow, 3d, 4th, 7th, Sth, lotli, I2th, 15th, i6th, 

 17th, 20th, 21st, 26th, 31st. 

 Sleet, 31st. 



Days of Sleigliing, 14. 



Gales, 35 or more miles per hour : 46m, loth 



W.S. W.; 63m, 12th, W.N.W; 36m, 17th, N. 



