MONTHLY SUMMARY 



February 1941 



Barometer, in inches 



(Readings reduced to sea leyel) 



Maximum 30.38, 10th 



Minimum 28.91 , 7th, 8th 



Mean semi-daily 29.868 



Range 1 .47 



Air Temperature, in degrees F. 



Highest 46, 7th 



Lowest 2, 5th, 6th 



Mean 25.8 



Range 44 



Highest mean daily 3.75, 8th 



Lowest mean daily 16.0, 19th 



Mean maximum 34.8 



Mean minimum 16.7 



Greatest daily range 38, 5th 



Least daily range 8, 2nd, 19th 



Precipitation, in inches 



Precipitation 1 .59 



Snow 2.25 



Maximum precipitation in 24 hrs. 1.39, 7th 



Number of days with .01 or more 5 



Wind, in miles 



Total movement 5301 



Greatest daily movement 382, 16th 



Least daily movement 30, 2nd 



Mean hourly velocity 7.9 



Maximum velocity 40, 15th 



Wind, direction 



Prevailing direction N W 



North, days 7 



Northeast, days 



East, days 



Southeast, days 1 



South, days 



Southwest, days 3 



West, days 2 



Northwest, days 15 



Weather 



Mean relative humidity, percent 71.1 



Mean cloudiness, percent 43 



Number of clear days 19 



Number of fair days 6 



Number of cloudy days 3 



Number hours bright sunshine 212 



Percent of possible hours of bright 

 sunshine 71.6 



Normal 



Extremes 



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 



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 



17, '19, '24;2, 1927 



16, 1920; 2, 1936 



16, 1894; 2. 1920 



221, 1924; 110, '27, '38 



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 1940. 



