Monthly summary 



October, 1929 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.68, 10th, 11th 30.53 



Minimum 29.33, 16th, 17th 29.42 



Mean semi-daily 29.390 30.059 



Range 1.35 1.11 



Air Temperatare 



Highest 76.0, 21st 



Lowest 22.0, 11th 



Mean 49.0 



Monthly range 54.0 



Highest mean daily 61.5, 22nd 



Lowest mean daily 33.5, 30th 



Mean maximum 60.2 



Mean minimum 37.9 



Greatest daily range 43.0, 19th 



Least daily range 0,2nd 



Precipitation 



Precipitation. In inches 2.75 



Maximum precipitation in 24 hrs. 1.28, 



2nd. 

 Number of days on which .01 or 



more inches of rain fell 9 



Wiad (miles) 



Total movement 4798 



Greatest daily movement 346, 18th 



Least daily movement 14, 30th 



Mean hourly velocity 6.4 



Maximum velocity for 5 min 35, 27th 



(corrected to conform 103 cup anemometer) 



Wind (direction) 



Prevailing direction wsw 



North, days 2 



Northeast, days 1 



East, days 1 



Southeast, days 5 



South, days 6 



Southwest, days 3 



West, days 5 



Northwest, days 8 



Weather 



Mean relative humidity, per cent 64 



Mean cloudiness, per cent 55 



Number of clear days 12 



Number of fair days 9 



Number of cloudy days 10 



Number of hours bright sunshine 186.2 

 Percent of possible hours of bright 



sunshine 55 



Thunder and lightning 

 Frost 9th, 10th, llth,12th, 15th, 19th, 28th, 

 29th, 30th 



79.7 

 23.4 

 50.4 

 56.3 



3.35 



4023 



5.4 



27 



76.9 



47.6 



8 



11 



12 



171.0 



50 



30.67, 1891, 1895, 1897 

 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 



5467, 1910; 2540, 1894 



35, 1906, 1916, 1925 



86.7 1920; 65.5, '91. '92 



64, '90, '00; 18, 1924 



14, 1897,1916; 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 and third columns give the averages and extremes observed from 1889 

 to 1928 for the same month of the year. 



