Monthly Summary 



August, 1937 



Normal 



Kxtrenies 



Barometer 



(Readings reduced to sea level) 



Maximum 30.32, 15th 



Minimum 29.75, 12th 



Mean semi-daily 30.065 



Range 5-^ 



Air Temperature 



Highest 95, 20th 



Lowest 50, 16th 



Mean 73.3 



Monthly range 45 



Highest mean daily 84, 20th 



Lowest mean daily 59.5, 23rd 



Mean maximum 83.5 



Mean minimum 63.0 



Greatest daily range 41, 16th 



Least daily range 5, 23rd 



Precipitation 



Precipitation. In inches 4.91 



Snow, in inches 



Maximum precipitation in 24 hrs. 



1.98 27th 

 Number of days on which .01 or more 



inches of precipitation fell. . 12 



Wind (miles) 



Total movement 2,870 



Greatest daily movement 180, Uth 



Least daily movement 44, 29th 



Mean hourly velocity 3.9 



Maximum velocity, 5 min., 22, 27th 



Wind (direction) 



Prevailing direction s 



North, days 2 



Northeast, days 2 



East, days 



Southeast, days 7 



South, days 9 



Southwest, days 4 



West, days 4 



Northwest, days 3 



Weather 



Mean relative humidity, per cent. . 75.1 



Mean cloudiness, per cent 6 



Number of clear days l-* 



Number of fair days 1^ 



Number of cloudy days 1^ 



Number of hours bright sunshine . . 2lC 

 Percent of possible hours of bright 



sunshine r->0 



Thunder and lightning 4th, 9th, lOth, 



11th, 12th, 20th, 21st 



30.32 



29.63 



30.00 



.69 



91.3 

 42.9 

 68.4 

 48.4 



4.24 



10 



3,099 



4.2 

 21 



69.6 



49.4 



9 



13 



9 



237.0 



55.2 



30.48, 1918 

 28.87, li/3U 



1.49, 1930; 0/4, 1884 



100.0, 1918 

 37.0, 1894, 1908 



8.40, 1928; 0.31, 1894 



16, 1892, 1933; 4, 1889 

 4,271,1910; 1,920, 1894 



35,1915 



67, 1901; 27, U". 3 



17, 1921, 19;iC; 0, 1<)15 



25, 1912; 5, 1893, 193,'^, 19 6 



18, '01, '28; 2, '10, 1923 



317, 1921; 152, 1915, 1929 



Note— The first column in the above sniiiniary trives observations made durins the 

 month. The second column erives the averaues based on observations made from 1889 

 to 1928. except that humidity records are based on observations made from 1929 to 1936 

 Ttie third column (jives extremes observed from 1889 to 1936 



