Annual Summary for 1907. 



Pressure. In inches. 



Maximum reduced to freezing, 



Minimum reduced to freezing 



Maximum reduced to freezing and sea-level, 

 Minimum reduced to freezing and sea-level, 

 Mean reduced to freezing and sea-level, . . . 

 Annual range, 



30.44, Feb. 24th, I A. 



28.68. Apr. gth, 12 P. 

 30.78, Feb. 24tli, I A. 



28.99, Apr. 9th, 12 p. 



30.018 



1-79 



*Air Temperature. In degrees Fahr. 



Highest, 96.0, Aug. 12th, 4:00 p. 



Lowest, . . • —23-S, Jan. 24th, 7 a. 



Mean, 45-2 



Mean of means of max. and min 45.4 



Mean sensible (wet bulb) , 40.8^ 



Annual range, ii9o 



Highest mean daily, 78-6, July iSth- 



Lowest mean daily, — 8.0, Jan. 24th' 



Mean maximum *. 55-8 



Mean minimum, 35-1 



Mean daily range, 20.7 



Greatest daily range 43-°. May 14th 



Least daily range, 2.0, June 2d. 



Humidity. 



Mean dew point, 36-9 



Mean force of vapor, 355 



Mean relative humidity, 77-9 



Wind. 



Prevailing direction West 



Summary. 



North, Northwest, 10 per cent. 



West, 10 '• " 



South, Southeast 10 " " 



Northwest, 11 " 



South, 9 '■ 



West, Northwest, ... 9 " 



Other directions, 41 '" 



Total movement, 60.016 m. 



Greatest daily movement, . . .529 m., Feb. 3rd. 



Least daily movement 18 m., Dec. 8th. 



Mean daily movement 164 m. 



Mean hourly velocity, 6.8 ni. 



*Temperature in ground shelter. 



T. A. BARRY, 



0/>serTer. 



Maximum pressure per square foot, 32.5 lbs.^81 

 m. per hour, July 20th, 8 p., W. 



Maximum velocity for 5 minutes, 44 m. per 

 hour. Mar. 20th, 3 A. W.N.W. 



Precipitation. In inches. 



Total precipi.tation, rain or melted snow, . 42.27 

 Number of days on which .01 or more rain 



or melted snow fell, 122 



Snow total in inches, 54.5 



Weather. 



Mean cloudiness observed, 49 per cent. 



Total cloudiness recorded by Sun Thermom- 

 eter, 2137 hrs. =48 per cent. 



Number of clear days, • • 95 



Number of fair days, 155 



Number of cloudy days 115 



Hright Sunshine. 



Number of hours recorded, 2317 hrs.=52 per cent. 

 Dates of Frosts . 



Last May 22d 



First, Sept. 27th 



Dates of Snow. 



Last May nth 



First Nov. 24th 



Total days of sleighing 67 



Onles of 50 or More Miles Per Hour 



Jan. 9th., 53 m.; W. N. W. 



Feb. 3d, 63 m.; N. N. W. 



Mar. 29th, 74 m.; W. N. W. 



July 20th, Si m.; W. 



Dec. loth, 61 m.; S. S.E.: 31st, 50 m.; N. W. 



J. E. OSTRANDER, 



Meteorologist. 



