MONTHLY SUMMARY 



August, 1945 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.27, 24th 



Minimum 29.66, 26th 



Mean semi-daily 30.004 



Range - 0.61 



Air Temperature, in degrees F. 



Highest 



Lowest 



Mean 



Range 



Highest mean daily 



91, 21st 



47, 16tli 



68.3 



44 



_.-_76. 21st 



Lowest mean daily 56, 25th 



Mean maximum 79.8 



M ean minimum 56.9 



Greatest daily range 34, 20th 



Least daily range — 9, 7th 



Precipitation, in inches 



Precipitation 2.79 



Snow — 



Maximum precipitation in 24 hrs. 1.05, 6th 



Number of days with .01 or more 6 



Wind, in miles 



Total movement ,2777 



Greatest daily movement 213, 15th 



Least daily movement —36, 12th 



Mean hourly velocity ZH 



Maximum velocity 28, 23rd 



Wind, direction 



Prevailing direction SW 



North, days 



Northeast, days 



East, days — _. 1 



Southeast, days 9 



South, days 4 



Southwest, days 2 



West, days * 7 



Northwest, days _. 8 



Weather 



Mean relative humidity, percent 12.() 



Mean cloudiness, percent 50 



Number of clear days 13 



Number of fair days .— _.,.14 



Number of cloudy days A 



Number hours bright sunshine 263 



Percent of possible hours of bright 



sunshine _ _. _ 61.3 



Thunder and liglitning _/30th, 31st 



Normal 



30.32 



29.61 



30.00 



0.71 



91.6 

 43.4 

 68.6 

 48.1 



11 



3127 



4.2 

 22.7 



SW 



70.2 



49.7 



9 



13 



9 



237 



55.2 



First frost ^ .___ — Sept. 21 



Extremes 



30.50, 1934 

 28.87, 1930 



100, 1918 



2>1, 1894, 1908 



34, 1940 



8.40, 1928; .31, 1894 



16, 1892, 1933; 4, 1899 



4,271, 1910; 1,920, 1894 



40, 1941 



(n, 1901 ; 27, 1923 



23, 1941 ; 0, 1915, 1929 



25, 1912; 3, 1939 



18, 1901, '28; 2, 1910, '23 



332, 1941; 152, 1915. 1929 



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



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

 the month. The second column gives the averages based on observations made 

 from 1889 to 19.38, except that humidity records are based on observations made 

 from 1929 to 1938. The third column gives extremes observed from 1889 to 1944. 



