Monthly Summary 



October. 19S6 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum . 30.61, 14th 



Minimum 29.17, 17th 



Mean semi-daily 30.094 



Range 1.44 



Air Temperature 



Highest 77> 20th, 21st 



Lowest 17, 28th 



Mean 50.6 



Monthly range 60 



Highest mean daily 65.5. 21st, 22nd 



Lowest mean daily 31.5, 27th 



Mean maximum 61.3 



Mean minimum 39.9 



Greatest daily range 38, 20th 



Least daily range 2, 17th 



Preciititatioii 



Precipitation. In inches 4.90 



Snow, in inches 



Maximum precipitation in 24 hrs. 



1.87, 1st 

 Number of days on which .01 or more 



inches of rain fell 10 



Wind (miles) 



Total movement 4018 



Greatest daily movement 275, 26th 



Least daily movement 44, 10th, 14th 



Mean hourly velocity 5.4 



Maximum velocity for 5 min., 29, 26th 



Wind (direction) 



Prevailing direction ssw 



North, days 2 



Northeast, days 



East, days 



Southeast, days 10 



South, days 6 



Southwest, days 2 



West, days 6 



Northwest, days 5 



W e !i t h e r 



Mean relative humidity, per cent. . 74.2 



Mean cloudiness, per cent 48 



Number of clear days 13 



Number of fair days 4 



Number of cloudy days 14 



Number of hours bright sunshine . 174 

 Percent of possible hours of bright 



sunshine .51 



Frosts, 13th, 25th, 26th, 27th, 28th, 



29th, 31st 



30.53 



29.42 



30.059 



1.11 



79.7 

 23.4 

 50.4 

 56.3 



3.35 



4,023 



5.4 

 27 



68.4 



47.6 



8 



11 



12 

 171.0 



50.1 



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 



39, 1934, 1935 



67, 1932; 18, 1924 

 16, 1934; 1, 1911 

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

 '34, '35 



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 erives the averages based on observations made from 18H9 

 to l'.)-.'s. except that humidity records are based on observations made from 1929 to 1986 

 The third column gives extremes observed from 1889 to 1935. 



