METEOROLOGICAL OBSERVATORY 



OF THE 



Hatch Experiment Station 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



.A^nS/IIiE^lST. 



Latitude, 42° 23' 48. 5" N. Longitude 72° 31' 10" W. 



Height of harometer above ground, 51 ft. Above sea level, syj.^ ft. 

 Height of Wind Instruments 72 ft. 



BULLETIN No. 203. 



NOVEMBER, 1905, 



MONTHLY SUMMARY. 



Preasufe, In inches. 

 M ax 1 mil ni reduced to freezing, 30.31, 30th, 12 p. 

 .Mininuini reduced to freezing, 29.11, 13th, 2 p. 

 Reducedt maximum reading, 30.63, 3otli, 12 p. 

 Reducedt minimum reading, 29.41, 13th, 2 p. 



Mean semi-daily reduced, 30.009 



Moiitlily range, 1.22 



* Alt' Temperature. In Degrees Fahr. 



Highest 61.0, 1st, 3 p. 



Lowest 1 1. 0, 14th, 7.30 A. 



Mean hourly, 36.3 



Mean of means of max. and min 36.5 



Mean sensible (wet bulb), 32.1 



Monthly range, 50.0 



Highest mean daily 46.2,24th 



Lowest mean daily 21.3,14th 



Mean maximum, 47.5 



Mean minimum, 25.6 



Mean daily range, 21.9 



Greatest daily range, 33.0, 13th, 22d 



Least daily range, 9.0, 6th 



Ilntnidity. 



Mean dew point, 26.8 



Mean force of vapor 211 



Mean relative humidity, 73.5 



Precipitation. In inches. 

 Total precipitation, 2.06 



Number of days on which .01 inch or more 

 rain or melted snow fell, 7 



* Temperature in ground shelter. 

 1 Reduced to freezing and sea-level. 



Total movement, 4317 ni. 



Greatest daily movement, .... 406 m., 30th 



Least daily movement, 16 m., 26th 



Mean daily movement, 143.9 ni. 



Mean hourly velocity 6.0 m. 



Maximum pressure per square foot, 9.0 lbs.= 



43 m. per hour, 29th, 10 P., S.S.W. 

 Prevailing Direction, West, Northwest. 

 Summary. 



Northwest, 17 percent. 



West, Northwest, 20 " " 



West, Southwest, 10 " " 



South, Southeast, 17 " " 



North, Northwest, 10 " " 



Other directions, 26 " " 



Weather. 

 Mean cloudiness observed, .... 42 jier cent. 

 Total cloudiness recorded by the -Sun 'Iher- 



mometer, . ... i37hrs.=47 per cent. 



Number of clear days, 8 



Number of fair days, 13 



Number of cloudy days, 9 



aright Sunshine. 

 Number of hours recorded, . . 156 hrs. = 53)1 

 Kfim, 3d, 4th, 6th, 8th, 13th, 15th, 26th, 28th, 



2gth. 

 Galeit,y~, miles ormore per hour, 35 m. 13th, 



N.N.W. ; 35m. 17th, W.N.W.; 35m., 21st, 



N.N.E.; 43 m. 29th, S.S.W. ; 41 m. 30th, 



W.N.W. 

 Snow, gth, 28th, 30th. 



