Monthly Summary 



August. l'j:« 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.35, 7th 



Minimum 29.53, 25th 



Mean semi-daily 30.011 



Range 0.82 



Air Temperature 



Highest 98, 1st 



Lowest 47, 10th 



Mean 69.3 



Monthly range 51 



Highest mean daily 83, 1st 



Lowest mean daily 61.5, 10th 



Mean maximum 79.4 



Mean minimum 59.0 



Greatest daily range 33, 5th 



Least daily range 4, 17th 



Precipitation 



Precipitation. In inches 6.63 



Snow, in inches 



Maximum precipitation in 24 hrs. 1.63, 



3rd and 4th, 13th and 14th 

 Number of days on which .01 or more 



inches of rain fell 16 



Wiiiti (miles) 



Total movement 3,569 



Greatest daily movement 303, 24th 



Least daily movement 43, 28th 



Mean hourly velocity 4.8 



Maximum velocity for5min., 20, 23rd,24th 



(L'orrerted to conform to 3 cui) aiienioiueter) 



Wind (direction) 



Prevailing direction w 



North, days 3 



Northeast, days 



East, days 1 



Southeast, days 6 



South, days 2 



Southwest, days 4 



West, days 6 



Northwest, days 9 



Weather 



Mean relative humidity, per cent. . 74.1 



Mean cloudiness, per cent 54.5 



Number of clear days 12 



Number of fair days 5 



Number of cloudy days 14 



Number of hours bright sunshine 217.1 

 Percent of possible hours of bright 



sunshine 50.6 



Thunder and Lightning, 1st, 13th, 28th 

 Frosts, 



30.32 



29.63 



30.00 



.69 



91.3 

 42.9 

 68.4 

 48.4 



4.24 



10 



3,099 



4.2 

 21 



78.4 

 49.4 

 9 

 13 

 9 

 237.0 



55.2 



30.48, 1918 

 28.87, 1980 



1.49, 1930; 0.44, 1894 



100.0, 1918 

 37.0, 1894, 1908 



8.40, 1928; 0.31, 1894 



16, 1892 ; 4, 1899 



4,271, 1910; 1,920, 1894 



35, 1915 



87.3, 1927; 65, 1929 

 67, 1901; 27, 1923 

 17, 1921; 0, 1915 

 25, 1912; 5, 1893 

 18, '01, '28; 2, '10, '23 

 317, 1921; 152, 1915, 1929 



Noi'K— The first column in the above summary gives observations made diiriiiK the 

 moiitli. The second column uives the averages based on observations made from l«,-'i to 

 l'J2t5. The third column gives e.xtremes observed from Iss'J to 1".)82. 



