ANNUAL SUMMARY FOR 1891. 



PRE88UBJS. 



In Inches. 

 Autiial max. reading, . 30.44, Nov. 19th, 10 a.m. 

 Actual min. reading, . . 28.40, Jan. 12th, 6 a.m. 

 Mean reduced to sea level, ... ■ . . SO.OIS 

 Annual range, 2,04 



AIR T£:MPERATTTJtE. 



lu Degi-ees Fahr. 



Highest 91..5; 94, June 16th 



Lowest, 0.0; -6, Feb. 15th 



Mean, . 49.7; 49.1 



Annual range, 91.5; 100 



Highest mean daily, 79.0 Jlne 15, 10 ; 77.3 Aug. 11 



Lowest mean daily, 11.3; 9.3, Mar. 2d 



Mean maximum, 57.2; 59.7 



Mean minimum, 41.8; 36.7 



Mean daily range, 15.4 ; 23 



Greatest daily range, . . . 39; 51.5, May 10th 

 Least daily range, . . 2; 6.5, Mar. 9th, Dec. 25th 



HJIMIDITT. 



Mean dew point 40.1 



Mean force of vapor, 4645 



Mean relative humidity, 66.8 



WIND. 



Prevailing Directions. 



North \% 



South, 1.31', 



North West • . . 12«4 



•South, South West, W/o 



Total movement, 45212 m 



Greatest daily movement, . . 443 m., Mar. 14th 



Least eaily movemene 3 m., Jan. 1st 



Mean daily movement 151.3 m. 



Mean hourly velocity 6.3 m. 



Max. pressure per sq. ft., 16\ lhs.=.57 m. per lir. 

 Jan. 23d at 3 p. m. 



yRECI PITA TION. 



Total rain-fall or melted snow, 34.82 in. ; 46.80 in. 

 Number of days on which .ol inch of rain i 



or melted snow fell, 112 



Total snow fal) in inches, 



. 54', in. 



WEATaEB. 



Mean clourffhess observed, ^'M 



Total cloudiness recorded by tlie Sun 



Thermometer 2220 hrs. or .504 



Number af clear days, .' 145 



Number of fair dnys, 103 



Number of cloudy days, 117 



BJtIGHT SUNSHINE. 



Number of hours recorded, 22-15 



Mean Ozone, 48'3' 



VATES OP FROSTS. 



Last, May 19th 



First, . . . Oct. 12th 



DATES OF SNOW. 



Last, May 5th 



First, Nov. 26th 



The first figures denote readings at top of tower, the second at base. 



C. D. WARNER, Meteorologist. 

 A. T. REALS, Assistant. 



