Monthly Summary 



July, 1984 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.40, 10th 



Minimum ... 29.71, 20th 



Mean semi-daily 29.952 



Range 69 



Air Temperature 



Highest 92, 3rd, 26th 



Lowest 48,23rd 



Mean 72.4 



Monthly range 44 



Highest mean daily 81.5, 26th 



Lowest mean daily . . 64.5, 17th, 23d, 24th 



Mean maximum 84.0 



Mean minimum 60.7 



Greatest daily range 36, 19th 



Least daily range 7, 27th 



Precipitation 



Precipitation. In inches 1.73 



Snow, in inches 



Maximum precipitation in 24 hrs. .75, 



28 th 

 Number of days on which .01 or more 



inches of rain fell 9 



Wind (miles) 



Total movement 3,087 



Greatest daily movement 192, 16th 



Least daily movement, 42, 29th 



Mean hourly velocity 4.1 



Maximum velocity for 5 min., 28, 3rd 

 (eorrected to coiifo'.m to 8 cnp anemometer) 



Wind (direction) 



Prevailing direction s 



North, days .... 



Northeast, days 



East, days 



Southeast, days 14 



South, days 2 



Southwest, days 2 



West, days 4 



Northwest, days 9 



Weather 



Mean relative humidity, per cent. . 65.9 



Mean cloudiness, per cent 55 



Number of clear days 10 



Number of fair days 14 



Number of cloudy days 7 



Number of hours bright sunshine 286.8 

 Percent of possible hours of bright 



sunshine 62.1 



Thunder and Lightning 3rd, 13th, 26th, 

 28th, 31st 



30.28 



29.60 



29.972 



.68 



93.9 



45.5 

 70.6 

 48.4 



4.33 



11 

 3,435 



4.6 



24 



75.6 



50.1 



9 



14 



8 



267.0 



57.8 



30.50, 1892 

 29.27, 1932 



0.97, 1892; 0.51, 1895, 1899 



104.0, 1911 

 40.0, 1890, 1898 



14.51, 1897; 0.70, 1929 



20, 1915; 4, 1924 

 5,097, 1909; 1,109, 1894 



39, 1908, 1915 



88.8, 1927; 64.8, 1893 

 69, 1914; 31, 1924 

 22, 1923; 0, 1915 

 24, '09 '21; 5, '89, '23, '28 

 18, 1889; 0, 1910 

 371, 1910; 182, 1889 



Note— The first column In the above summary gives observations made during the 

 month. The second column e:ives the averages based on observations made from 1889 to 

 1928. The third column gives extremes observed from 1889 to 1938. 



