MONTHLY SUMMARY 



JUNE 1952 



Normal 



Extremes 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.288, 30th 



Minimum 29.542, 10th 



Mean semi-daiiy 29.885 



Range 0.746 



Air Temperalure, in degrees F. 



Highest 98,26th 



Lowest 48, 3rd, 23rd 



Mean 68.8 



Range 50 



Highest mean daily 84.5, 26th 



Lowest mean daily 62 ; 20th, 21st, 22nd 



Mean maximum 80.7 



Alean minimum 60.0 



Greatest daily range 2>7, ISth 



Least daily range 8, 1st, 22nd, 29th 



Degree-days of heating load for month.. 14 

 Degree-days cumulative for season 6223 



Precipitation, in inches 



Precipitation 4.97 



Snow 



Maximum precip. in 24 hrs 2.70, 1st 



Number of days with .01 or more 9 



Wind, in miles 



Total movement 3834 



Greatest daily movement 257, 12th 



Least daily movement 49, 22nd 



Mean hourly velocity 5.3 



Maximum velocity 32, 19lh 



Wind, direction 



Prevailing direction W 



North, days 5 



Northeast, days 3 



East, days 



Eoutheast, days 



South, days 4 



Southwest, days 6 



West, days 5 



Northwest, days 7 



Weather 



Mean relative humidity, percent 71.3 



Mean cloudiness, percent 43.2 



Number of clear days 14 



Number of fair days 12 



Number of cloudy days 4 



Number of hours bright sunshine 265.6 



Percent of possible hours of 



bright sunshine 58.1 



Thunder and lightning 17th, 25th, 26th 



30.30 



29.55 



29.95 



0.75 



91.2 

 40.0 

 65.7 

 51.3 



30.70, 1947 

 29.24, 1902 



101, 1919 

 34, 1891 



3.75 



11 



3585 



5.0 

 24.6 



WSW 



9.68, 1922; 0.76, 1908 

 17, 1922, 1945; 4, 1908 

 4571, 1908; 1409, 1906 



48, 1939 



66.9 



51.1 



10 



12 

 8 



257 



54.0 



71, 1903: 28, 1908 



22, 1908, 1941, 1943; 0. 1949 



23, 1912; 3, 1941 



22, 1903; 1, 1923 



365, 1947; 102, 1903 



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 1951. 



