Monthly Summary 



October, 19a4 



Barometer 



(Readings reduced to sea level) 



Maximum 30.53, 4th, 5th 



Minimum 29.51, 27th 



Mean semi-daily 30.027 



Range 1.02 



Air Tempersi ture 



Highest 72, 3rd 



Lowest 28, 10th, 31st 



Mean 47.7 



Monthly range 44 



Highest mean daily 58, 18th 



Lowest mean daily 38, 28th 



Mean maximum 57.3 



Mean minimum 38.1 



Greatest daily range 36, 3rd, 17th 



Least daily range 4, 12th 



Precipitation 



Precipitation. In inches 2.35 



Snow, in inches T 



Maximum precipitation in 24 hrs. .87, 



6th 

 Number of days on which .01 or more 



inches of rain fell 6 



"Wind (miles) 



Total movement 4,406 



Greatest daily movement 420, 13th 



Least daily movement 33, 22nd 



Mean hourly velocity 6.0 



Maximum velocity for 5 min., 39, 7th 

 (conei'ted to confonu to 3 cni) anemometer) 



Wind (direction) 



Prevailing direction w 



North, days 5 



Northeast, days 1 



East, days 4 



Southeast, days 1 



South, days 6 



Southwest, days 4 



West, days 7 



Northwest, days 3 



Weather 



Mean relative humidity, per cent. . 72.7 



Mean cloudiness, per cent 46.0 



Number of clear days 16 



Number of fair days 5 



Number of cloudy days 10 



Number of hours bright sunshine 210.3 

 Percent of possible hours of bright 



sunshine 61.7 



Thunder and Lightning 



Frosts, 2, 5, 10, 14, 16, 17, 21, 28, 29, 30, 31 



Normal 



30.53 



29.42 



30.059 



1.11 



79.7 

 23.4 

 50.4 

 56.3 



3.35 



4,023 



5.4 



27 



76.9 

 47.6 

 8 

 11 

 12 

 171.0 



50.1 



Extremes 



30.68, 1929 

 29.00, 1926 



1.47, 1926; 0.76, 1899 



90.5, 1908 

 18.0, 1904 



8.81, 1911; 0.01, 1924 



15, 1913; 1, 1897, 1924 

 5,467, 1910; 2,540, 1894 



35,1906,1916,1925,1929 



86.7, 1920; 64, 1929 



67, 1932; 18, 1924 



15, 1931; 1, 1911 



17,' 24; 5, '94, '96, '98, '03, '17 



19, 1896; 3, 1924 



232, 1923; 91, 1913 



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

 month. The second column gives the averages based on observations made from 18H9to 

 1928. The third column gives extremes observed from 1889 to 19,S.S 



