MONTHLY SUMMARY 



AUGUST 1949 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.27, 16th 



Minimum 29.58, 18th 



Mean semi-daily 29.993 



Range 0.69 



Air Temperature , in Degrees F. 



Highest 98; 9th, 10th 



Lowest 45, 20th 



Mean 72.7 



Range 53.0 



Highest mean daily 82.5, 9th 



Lowest mean daily 59, 20th 



Mean maximum 84.3 



Mean minimum 60.8 



Greatest daily range 39, 22nd 



Least daily range 9, 3rd, 12th 



Degree-days of heating load for month. . 

 Degree-days cumulative for season. . . 



Precipitation, in inches 



Precipitation 3.64 



Snow 



Maximum precip. in 24 hrs 1.14, 29th 



Number of days with .01 or more 7 



Wind, in miles 



Total movement 2341 



Greatest daily movement 214, 29th 



Least daily movement 29, 4th 



Mean hourly velocity 3.1 



Maximum velocity 22, 29th 



Wind, direction 



Prevailing direction SW 



North, days 2 



Northeast, days 4 



East, days 1 



Southeast, days 2 



South, days 4 



Southwest, days 10 



West, days 4 



Northwest, days 4 



Weather 



Mean relative humidity, percent 72.0 



Mean cloudiness, percent . .45.3 



Number of clear days 21 



Number of fair days 5 



Number of cloudy days 5 



Number of hours bright sunshine 304.5 



Percent of possible hours of 



bright sunshine 70.7 



Thunder and lightning 3 1 st. 



Normal 



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 



70.2 



49.7 



9 



13 



9 



237 



55.2 



I Sept. 21 



Extremes 



30.50, 1934 

 28.87, 1930 



100, 1918, 1948 



34, 1940 



62.4, 1903 



8.40, 1948; .31, 1894 

 16, 1892, 1933; 4, 1899 



4,271, 1910; 1,920, 1894 

 40, 1941 



67, 1901, 1946; 27, 1923 



23, 1941; 0, 1915, 1929 



25, 1912; 3, 1939 



18, 1901, 1928; 2, 1910, 1923 



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 1938, 

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

 third column gives extremes observed from 1889 to 1948. 



