ANNUAL- SUMMARY 



Annual, 1930 



Barometer 



(Readings reduced to sea level) 



Maximum 30.78> Nov. 29 



Minimum 29.87, Aug. 24 



Mean semi-daily 29.978 



Range 1-91 



Air Temperalure 



Highest 95, July 21 



Lowest -6, Feb. 6 



Mean 48.6 



Range 101 



Highest mean daily 80, Aug. 3rd 



Lowest mean daily 4, Feb. 6 



Mean maximum 59.0 



Mean minimum 38.0 



Greatest daily range .. 42, June 3, Oct. 13 

 Least daily range 2, April 23 



Precipitalion 



Precipitation. In inches 32.82 



Snow, in inches 29.50 



Maximum precipitation in 24 hrs. 



1.64, June 9 

 Number of days on which .01 or 



more inches of rain fell 130 



Winil (miles) 



Total movement 50,966 



Greatest daily movement . .475, Mar. 14 



Least daily movement 28,Dec. 30 



Mean hourly velocity 5.8 



Maximum velocity for 5 min. 39, Jan. 9, 

 Nov. 6 

 (corrected to conform to 3 cup anemometer) 



Wind (direction) 



Prevailing direction sw 



North, days 18 



Northeast, days 6 



East, days 12 



Southeast, days 96 



South, days 46 



Southwest, days 35 



West, days 64 



Northwest, days 88 



Weather 



Mean relative humidity, per cent . . 69.0 



Mean cloudiness, per cent 55 



Number of clear days 163 



Number of fair days 100 



Number of cloudy days 102 



Number of hours bright sunshine 2,628 

 Percent of possible hours of bright 



sunshine 59 



Last Frosts May 31st 



First Frost Oct. 1st 



Last snow April 24th 



First snow Oct. 25th 



Normal 



30.81 



28.95 



30.016 



1.86 



95.8 

 -12.1 



47.2 

 108.0 



58.1 

 36.1 



43.40 



48.38 



123 



52,321 



Extremes 



6.0 



35 



75.8 

 50.8 

 109 

 128 

 128 

 2,356 



53 

 M'yl2 

 S't 19 

 Aprl4 

 Nov 5 



31.00, 1927 

 28.47, 1914 



2.33, 1913; 1.55, 1923 



101, 1919 



-26.0, 1904 



49.6, 1913; 44.0. 1904 



57.05, 1897; 30.68, 1908 

 78.00, 1920; 24.50, 1919 



144, 1902, 96, 1924 

 63,571, 1908; 36,257, 1894 



42, 1912 



82.9, 1927; 66.8, 1891 



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



145, 1891; 59, 1927 



182, 1912; 83, 1894 



192, 1920; 71, 1910 



2,793, 1910; 1864, 1902 



Apr. 23, 1904; June 3, 1908 

 Aug. 22, 1894; Oct. 13, 1909 

 Mar. 14. '10; May 5, '91, '17 

 Oct. 10, '25; Nov. 26, '91 



NoiE — The first column in the above summary gives observations made during the 

 year. The second and tliird columns give the averages and e.xtrenies observed from 18S9 

 to 1929. 



