Monthly Summary 



September, 1982 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.49, 26th 



Minimum 29.40, 16th 



Mean semi-daily 30.064 



Range 1.09 



Air Temperature 



Highest 92, 2nd 



Lowest 32, 30th 



Mean 62.5 



Monthly range 60 



Highest mean daily 78, 2nd 



Lowest mean daily 43, 30th 



Mean maximum 74.6 



Mean minimum 50.4 



Greatest daily range 41, 11th, 12th 



Least daily range 8, 16th, 17th 



Precipitation 



Precipitation. In inches 3.96 



Snow, in inches 



Maximum precipitation 24 hrs. 1.94, 



16th 

 Number of days on which .01 or more 



inches of rain fell 7 



Wind (miles) 



Total movement 3,876 



Greatest daily movement 402, 9th 



Least daily movement 38, 12th 



Mean hourly velocity 5.4 



Maximum velocity for 5 min 32, 16th 



(corrected to conform to 8 cup anemometer) 

 Wind (direction) 



Prevailing direction w 



North, days 2 



Northeast, days 1 



East, days 3 



Southeast, days 5 



South, days 2 



Southwest, days 2 



West, days 6 



Northwest, days 9 



Weather 



Mean relative humidity, per cent . . 68.0 



Mean cloudiness, per cent 47.0 



Number of clear days 19 



Number of fair days 5 



Number of cloudy days 6 



Number of hours bright sunshine 253.1 

 Percent of possible hours of bright 



sunshine 68 



Thunder and Lightning 



Frosts 11th, 19th, 30th 



30.45 



29.59 



30.068 



.86 



87.4 

 32.8 

 61.6 

 54.6 



3.79 



3,252 



4.5 

 22 



80.0 

 48.7 

 9 

 11 

 10 

 202.5 



54.4 



19 



30.65, 1924 

 29.32, 1900 



1.20, 1924; 0.57, 1910 



97.0, 1895, 1929 

 24.5, 1914 



8.74, 1907; 0.52, 1914 



15, 1918; 3, 1903 



4,686, 1896; 1,414, 1894 



39, 1915 



89, 1927; 70.6, 1931 



65, 1889; 27, 1908, 1914 



18, 1891; 2, 1907, 1928 



19, 1908; 3, 1889 



19, '89, '07; 4, '08, '16 



255,1916; 110,1907 



Aug. 22, '94, '95; Oct. 13, '09 



NoTK— The first colnum in the above summary gives observations made dnrintr tlie 

 month. Tlie second column gives averag:es based on observations made from ls«'.» to 

 1928. The third column gives extremes observed from 188U to 1931. 



