MONTHLY SUMMARY 



July 1943 



Normal 



B^ronielcr, in inches 

 (Readings reduced ta sea level) 



Maximum - . 50.58, 2nd 



.Minimum ._. 29.67, 30:h 



Alean semi-daily 29.962 



Range -- 0.71 



Air Temperaliiic, in degrees F. 



Highest - 92, 10th 



Lowest 43, 2nd 



Mean 71.8 



Range — - 49 



Highest mean daily 81, 12th 



Lowest mean daily — 59.5, 1st 



Mean maximum 83.0 



Mean minimum 60.7 



Greatest daily range ^ 2>1 , 2nd, 20th 



Least daily range 5, 29th 



Precipitation, in inches 



Precipitation 6.18 



Snow - — 



Alaximum precipitation in 24 hrs.- 1.40, 29th 

 Number of days with .01 or more 16 



Wind, in miles 



Total movenient —2966 



Greatest daily movement ... 1 213, 5th 



Least daily movement ■. 39, 17th 



Mean hourly velocity -_ . 4.0 



Maximum velocity 25, 31st 



Wind, direction 



Prevailing direction _. WSW 



North, days 1 



Northeast, days 



East, days . : .^0 



Southeast, days .-. —7 



South, days .7 



Southwest, days 2 



West, days ....-_.._ 3 



Northwest, days -....■..- 11 



Weather 



Mean relative humudity, percent 83.2 



Mean cloudiness, percent 70 



Number of clear days 20 



Number of fair days -- . - 9 



Nun^ber of cloudy days .— 2 



Number hours bright sunshine .- 342 



Percent of possible hours of bright 



sunshine . 74 



Tiiunder and lightning 



11th, 13th, 20th, 21st, 22nd, 27th, 31st 



30.27 



29.59 



29.96 



0.68 



93.9 

 46.4 

 70.8 

 47.7 



Extremes 



4.10 

 11 



3422 



4.6 

 28.7 



SW 



68.4 

 50.9 

 10 

 14 



7 

 268 



58 



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 



69, 1914; 31, 1924 

 22, 1923; 0. 1915 

 24, '09, '21 ; 5, '89, '23, '28, 

 '36 



18, 1889; 0, 1910 

 371, 1910; 180. 1931 



Note — The first column in the above sumn:ary gives observations made during 

 the month. The second column gives the averages based on observations made 

 from 1889 to 1958, exccrt that humidity records are based on observations made 

 from 1929 to 1958. The third column gives extremes observed from 1889 to 1942. 



