Annual Summary for 1918. 



Pressure. 



Maximum reduced to freezing, . . 



Minimum reduced to freezing, 



Maximum reduced to freezing and sea-level, 

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

 Mean semi-daily reduced to freezing and sea-level 



Annual range 



*Air Temperature. In degrees Fahr. 



Highest loc.o, Aug. 7th, 3 P. 



Lowest, —22.5, Feb. 2d, 6 A. 



Mean hourly, 46.5 



Mean of means of max. and min., 46.9 



Mean sensible (wet bulb), •41-9 



Annual range, 122.5 



Highest mean daily, 81.7, Aug. 7 



Lowest mean daily, —9-1- Feb. 5 



Mean maximum, SS.o 



Mean minimum, 35-8 



Mean daily range, 22.2 



Greatest daily range, 44-5. Apr. 15 



Least daily range 3-5. Nov. 20 



Humidity. 



Mean dew point, 37-8 



Mean force of vapor, 380 



Mean relative humidity, 76-4 



Wind. 



Total movement 50.435 m 



Greatest daily movement 606m., March 3 



Least daily movement 4 m., Dec. 20 



Mean daily movement, 138 m 



Mean hourly velocity, ... 5.7 m 



Maximum pressure per square foot, 20.0 lbs., 



63 m. per hour, Feb. 26, 3 p., VV.N.U . 

 Maximum velocity for 5 minutes, 45 m. per 



hour, Feb. 26th, i p., VV.N.W. 



Prevailing direction, West. 



Summary. 



South Southwest i6perce 



South 15 " "_ 



Northwest " " 



North Northwest, to " 



North 9 " 



Other directions, 39 " 



In inches. 



30.38, Dec. 19th, 9 A. 



28.. 52 Jan. 15th, I p. 



30.70, Feb. 2ist, 12 p. Dec. 19th, 9A. 



28.84, Jan. 15th, I P. 



30-023 



1.86 



Precipitation. In inches. 

 Total precipitation, rain or melted snow, . 37.47 



Snow total in inches, 504 



Number of days on which .01 or more rain 

 or melted snow fell, 123 



Weather. 



Mean cloudiness observed 47 per cent. 



Total cloudiness recorded by Sun Thermom- 

 eter, 1920 hrs.^43 per cent. 



Number of clear days, 106 



Number of fair days, 151 



Number of cloudy days 108 



Bright Sunshine- 

 Number of hours recorded, 2532 hrs.=57 per cent 



Dates of Frosts. 



Last April 26th 



First, ^ept. nth 



Dates of .Suow. 



Last April 13th 



First Nov. 4th 



Total days of sleighing 79 



Gales of 50 or More Miles Per Hour. 



Feb. 4th. 57m., W.N.W.: Feb. 20th, 57m, N.W.; 

 Feb. 25th, 53m., S.W.: Feb. 26th, 631.1, WN.W.; 

 March 3d, 60m., N W. 



"Temperature in ground shelter. 



H. BEAMAN, 



Acting Observer. 



J. E. OSTRANDER, 



Meteorologist. 



