MONTHLY SUMMARY 



p-ebruary, 1943 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.50, 18th 



Minimum 29.27, 7th 



Mean semi-daily 29.947 



Range 1 .23 



Air Temperature, in degrees F. 



Highest 58, 23rd 



Lowest -23, 16th 



Mean 25.1 



Range - -81 



Highest mean daily —43, 23rd 



Lowest mean daily -13.5, 15th 



Mean maximum 34.6 



Mean minimum 15.6 



Greatest daily range 39, 16th 



Least daily range ..— 6, 8th 



Precipitation, in inches 



Precipitation 1.63 



Snow .^ _ - 5.00 



Maximum precipitation in 24 hrs. - 0.63, 11th 

 Number of days with .01 or more 8 



Wind, in miles 



Total movement 4672 



Greatest daily movement 361, 2nd 



Least daily movement 48, 22nd 



Mean hourly velocity 7 



Maximum velocity 35, 15th 



Wind, direction 



Prevailing direction W 



North, days 



Northeast, days — 



East, days 



Southeast, days - _ _ 6 



South, days - — 3 



Southwest, days 1 



West, days 6 



Northwest, days 12 



Weather 



Mean relative humidity, percent — 71.3 



Mean cloudiness, percent 58 



Number of clear days 15 



Number of fair days 8 



Number of cloudy days —5 



Number hours bright sunshine 199 



Percent of possible hours of bright 



sunshine 67.2 



Thunder and lightning — 



Normal 



30.63 



29.24 



30.04 



1.38 



50.5 

 -7.4 

 23.7 

 58 



32.8 

 14.5 



3.19 

 13.99 



10 

 4776 



7.1 

 31.7 



WNW 



Extremes 



66.6 



50.9 



10 



8 



10 



158 



53.4 



31.05, 1920 

 28.56, 1895 



1.89, '00, '08; .88, '13 '31 



65.0, 1930 

 -22.5, 1918 



8.12, 1900; 0.62, 1901 



48.75, 1893; 0.50, 1937 



15, '93, '20; 4, 1901 



6445, 1896; 3438, 1892 



48, 1934, 1937 



66, '90, '27; 31, 1905 



19, 1941 ; 2, 1927 



16, 1920; 2, 1936 



16,1894; 2, 1920 



221, 1924; 110, '27, '38 



Note — The first column in tlie 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. 



