ANNUAL SUMMARY 



Annual 1940 



Normal 



Extremes 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.64, Dec. 19 



Minimum 29.07, Feb. 14 



Mean semi-daily 30.002 



Range 1.57 



Air Temperature, in degrees F. 



Highest 94, July 26 



Lowest -10, Dec. 4 



Mean 46.1 



Range 104 



Highest mean daily 83, July 26 



Lowest mean daily 6.5, Dec. 4 



Mean maximum 56.1 



Mean minimum 35.8 



Greatest daily range 42, May 11 



Least daily range 3 



Precipitation, in inches 



Precipitation 43.57 



Snow 54.75 



Max. precipitation in 24 hrs.. .2.58, May 31 



Number of days with .01 or more 122 



Wind, in miles 



Total movement 51,173 



Greatest daily movement 572, Feb. 15 



Least daily movement. 31, Nov. 10, Dec. 15 



Mean velocity 5.8 



Maximum velocity 40, Feb. 14, Apr. 6, May 7 

 Wind, direction 



Prevailing direction WNW 



North, days 80 



Northeast, days 7 



East, days 6 



Southeast, days 25 



South, days 63 



Southwest, days 30 



West, days 38 



Northwest, days 117 



Weather 



Mean relative humidity, percent 74.7 



Mean cloudiness, percent 54 



Number of clear days 138 



Number of fair days 107 



Number of cloudy days 121 



Number hours bright sunshine 2,352 



Percent of possible hours of bright 



sunshine 52.8 



Last snow April 22 



First snow Nov. 16 



Last frost May 13 



First frost Sept. 27 



30.81 



28.95 



30.01 



1.85 



95.7 

 -12.2 



47.4 

 107.8 



57.8 

 36.5 



43.70 



47.78 



124 

 52,223 



5.8 

 39.5 



W 



31.05, 1920 

 28.41, 1938 



2.47, 1938; 1.38, 1933 



104, 1911 



-26, 1904 



49.8, 1921; 44, 1904 



59.00, 1938; 30.68, 1908 

 89.00, 1893; 24.50, 1919 



144, 1902; 96, 1924 



63,571, 1908; 36,257, 1894 



80, 1938 



67.6 

 51.7 



116 



123 



126 

 2,353 



52.8 

 April 15 

 Nov. 6 

 May 14 

 Sept. 21 



60, '98, '01, '02; 41, '08, '24 



169, 1936; 59, 1927 



182, 1912; 64, 1936 



179, '01, '02; 71, 1910 



2838, 1924; 1864, 1902 



Mar. 14, '10; May 11, '07 



Oct. 10, '25; Nov. 27, '31 



Apr. 23, '04; June 8, '32 



Aug. 22, '94, '95; Oct. 13,'09 



