MONTHLY SUMMARY 



July 1944 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.29, 3rd 



Minimum - 29.57, 27th 



Mean semi-daily 29.969 



Range .0.72 



Air Temperature, in degrees F. 



Highest 93, 8th, 9th 



Lowest _— .50, 22nd 



Mean 72.9 



Range 43 



81.5, 9th 



.-66, 21st, 22nd 



85.5 



60.4 



Highest mean daily 



Lowest mean daily 



Mean maximum 



Mean minimum 



Greatest daily range 33, 3rd, 5th, 26th 



Least daily range 9, 27th 



Precipitation, in inches 



Precipitation 3.88 



Snow — 



Maximum precipitation in 24 hrs. ...1.24, 27th 

 Number of days with .01 or more 12 



Wind, in miles 



Total movement 2747 



Greatest daily movement 188, 12th 



Least daily movement 33, 31st 



Mean hourly velocity 3.7 



Maximum velocity 32, 16th 



Wind, direction 



Prevailing direction SW 



North, days . 



Northeast, days 



East, days 



Southeast, days 9 



South, days 5 



Southwest, days 5 



West, days 2 



Northwest, days 10 



Weather 



Mean relative humidity, percent 66.8 



Mean cloudiness, percent 53 



Number of clear days 19 



Number of fair days 6 



Number of cloudy days 6 



Number hours bright sunshine 335 



Percent of possible hours of bright 



sunshine .... 72.5 



Thunder and lightning 4th, 11th, 16th 



20th, 21st, 2Sth, 27th, 29th. 30th 



Normal 



30.27 



29.59 



29.96 



0.68 



93.9 

 46.4 

 70.8 

 47.7 



4.10 

 11 



3422 



4.6 

 28.7 



SW 



58 



Extremes 



30.50. 1892 

 29.27, 1932 



0.97, 1892; 0.47, 1938 



104, 1911 



40, 1890, 1898 



74.7, 1921 ; 66.3, 1891 



14.51, 1897; 0.70, 1929 



20, 1915; 4, 1924 



5097, 1909; 1109, 1894 



44, 1936 



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

 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 1943. 



