MONTHLY SUMMARY 



JUNE, 1943 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum _- 30.22, 9th 



Minimum .29.46, 2nd 



Mean semi-daily 29.942 



Range .-- 0.76 



Air Temperature, in degrees F. 



Highest 95, 26th, 28th 



Lowest - 48, 7th 



Mean — - — - 71.1 



Range 47 



Highest mean daily 83.5, 27th 



Lowest mean daily 54.5, 7th 



Mean maximum 82.4 



Mean minimum 60.0 



Greatest daily range 34, 24th 



Least daily range .— 7, 1st 



Precipitation, in inches 



Precipitation 2.38 



Snow — ■ — 



Maximum precipitation in 24 hrs. 



__ .___ _ .....59, 1 st, 2nd 



Number of days with .01 or more 11 



Wind, in miles 



Total movement 3809 



Greatest daily movement 237, 5th 



Least daily movement 61, 9th 



Mean hourly velocity 5.3 



Maximum velocity 32, 20th 



Wind, direction 



Prevailing direction _ .WSW 



North, days ..— 1 



Northeast, days _ 



East, days _ 



Southeast, days — — 



South, days — 4 



Southwest, days . _ .- _ -.3 



West, days 5 



Northwest, days 9 



Weather 



Mean relative humidity, percent 73.6 



Mean cloudiness, percent 52 



Number of clear days _ —22 



Number of fair days 6 



Number of cloudy days 2 



Number hours bright sunshine 356 



Percent of possible hours of bright 



sunshine 77.9 



Thunder and lightning 1st, 5th, 13th, 



17th, 20th, 26th, 28th 



30.30 



29.55 



29.95 



0.75 



91.2 

 40.0 

 65.7 

 51.3 



3.75 



11 



3585 



5.0 

 24.6 



WSW 



Extremes 



66.9 



51.1 



10 



12 



8 



257 



54.0 



30.54, 1889 

 29.24, 1902 



101. 1919 

 34, 1891 



9.68, 1922; 0.76, 1908 



17, 1922; 4, 1908 

 4571, 1908; 1409. 1906 



48, 1939 



71. 1903; 28, 1908 



22, 1908, 1941; 1, 1927 



23. 1912; 3, 1941 



22, 1903; 1. 1923 



362, 1908; 102, 1903 



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 1942. 



