MONTHLY Summary 



October, 1983 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.65, 21st 



Minimum 29.54, 25th 



Mean semi-daily 30.110 



Range 1.11 



Air Teinperaiure 



Highest 79, ist 



Lowest 23, 26th 



Mean 49.0 



Monthly range 56 



Highest mean daily 66, 1st 



Lowest mean daily 34, 25th 



Mean maximum 60.1 



Mean minimum 37.9 



Greatest daily range 38, 15th 



Least daily range 8, 5th 



Pre ci pi tut ion 



Precipitation. In inches 3.90 



Snow, in inches 



Maximum precipitation in 24 hrs. 1.02, 



17th 

 Number of days on which .01 or more 



inches of rain fell 14 



Wind (miles) 



Total movement 4,048 



Greatest daily movement 355, 25th 



Least daily movement 37,27th 



Mean hourly velocity 5.4 



Maximum velocity for 5 min. . . 32, 25th 



(corrected to conform to s cup anemometer) 



Wind (direction) 



Prevailing direction nw 



North, days 



Northeast, days 1 



East, days 



Southeast, days 8 



South, days 1 



Southwest, days 2 



West, days 3 



Northwest, days 16 



Weather 



Mean relative humidity, per cent . . 68.0 



Mean cloudiness, per cent 51.0 



Number of clear days 13 



Number of fair days 9 



Number of cloudy days 9 



Number of hours bright sunshine 179.4 

 Percent of possible hours of bright 



sunshine 53.0 



Thunder and Lightning, 1 st 



Frosts, 4th, 14th, 15th, 16th. 19th, 21st, 



25th, 26th, 27th, 28th, 29th, 30th, 31st 



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 



30.68, 

 29.00, 



1929 

 1926 



1.47, 1926; 0.76, 1899 



90.5, 

 18.0, 



1908 

 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 dnrine- the 

 month. The second column gives the averages based on observations made from 18c'J to 

 19'2S. The third column gives extremes observed from 1889 to 1932. 



