MONTHLY SUMMARY 



AUGUST, 1953 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.300, 12th 



Minimum 29.558, 5th 



Mean semi-daily 30.078 



Range 0.742 



Air Temperature, in degrees F. 



Highest 96,, 29th, 30th 



Lowest 45, 19th 



Mean 69.8 



Range 51.0 



Highest mean daily 80.0, 28th, 3 1st 



Lowest mean daily 61.0, l^th 



Mean maximum 82.6 



Mean minimum 57.0 



Greatest daily range 35.0, 30th 



Least daily range 9.0, 14th 



Precipitation, in inches 



Precipitation 1.87 



Snow — 



Maximum precip. in 24 hrs 1.01, 10th 



Number of days with .01 or more 3 



Wind, in miles 



Total movement 2275 



Greatest daily movement 188, 5th 



Least daily movement 15, 27th 



Mean hourly velocity 3.1 



Maximum velocity 25. 15th 



Wind, direction 



Prevailing direction WNW 



North, days 3 



Northeast, days 1 



East, days 3 



Southeast, days 4 



South, days 4 



Southwest, days — 



West, days 9 



Northwest, days 7 



Weather 



Mean relative humidity, percent 67.3 



Mean cloudiness, percent 40.5 



Number of clear days 16 



Number of fair days 14 



Number of cloudy days 1 



Number of hours bright sunshine. . . .278.3 

 Percent of possible hours of 



bright sunshine 64.6 



Thunder and lightning — 



Normal 



Extremes 



30.32 



29.61 



30.00 



0.71 



91.6 

 43.4 

 68.6 

 48.1 



4.08 

 11 



3127 



4.2 



22.7\ 



SW 



30.50, 1934 

 28.87, 19.30 



100, 1918, 1948 



34, 1940 



62.4, 1903;73.5. 1939 



8.40, 1948; 0.31, 1894 

 16, 1892, 1933; 4, 189<) 



4.217, 1910; 1,920, 1894 

 ^0, I'Ml 



70.2 

 49.7 



9 

 13 



9 

 237 



67, 1901, 1946; 27, 1^23 



23, 1941; 0, 1915, 1929 



25. 1912; 3, 1939 



IS, 1901, 1928; 2, 1910, 1923 



332, 1941 ;1 52, 1915, 1929 



Note — The first column in the above summary lists observations made during the month. 

 The second column lists the averages based on observations made from 1889 to 1938, 

 except that humidity records are based on observations made from 1929 to 1938. The 

 third column lists extremes observed from 1889 to 1952. 



