MONTHLY SUMMARY 



FEBRUARY 1953 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.479, 20th 



Minimum . . . ;■ 29.041, ISth 



Mean semi-daily 29.976 



Range 1.438 



Air Temperature, in degrees F. 



Highest 57, 21st 



Lowest 7,2nd 



Mean 31.5 



Range 50 



Highest mean daily 46.5, 21st 



Lowest mean daily 15.5, 2nd 



Mean maximum 39.8 



Mean minimum 23.2 



Greatest daily range 36, 1st 



Least daily range 4, 12th 



Degree-days of heating load for month937.5 

 Degree-days cumulative for season. . 4300.5 



Precipitation, in inclies 



Precipitation 2.97 



Snow 11.7 



Maximum precip. in 24 hrs 1.08, 15th 



Number of days with .01 or more 12 



Wind, in miles 



Total movement 4623 



Greatest daily movement 468, 10th 



Least daily movement 14, 19th 



Mean hourly velocity 6.88 



Maximum velocity 48, 15th, 16th 



Wind, direction 



Prevailing direction NNW 



North, days 8 



Northeast, days 1 



East, days 1 



Southeast, days 1 



South, days 1 



Southwest, days 2 



West, days 1 



Northwest, days 13 



Weattier 



Mean relative humidity,' percent 73.'^ 



Mean cloudiness, percent 53 



Number of clear days 13 



Number of fair days 8 



Number of cloudy days 7 



Number of hours bright sunshine. . . . 147.9 

 Percent of possible hours of 



bright sunshine 50.1 



Normal 



Extremes 



30.63 

 29.24 

 30.04 



1.38 



50.5 

 —7.4 



23.7 

 58 



32.8 

 14.5 



1167 



4927 



3.19 

 13.99 



10 



4776 



7.1 



31.7 



WNW 



()6.(i 



50.9 



10 



8 



10 

 158 



53.4 



31.05, 1920 

 28.56, 1895 



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



65.0, 1930 



—23. 1943 



32.6, 1890; 11.6, 1934 



8.12, 1900; 0.62,, 1901 

 48.75, 1893; 0.50, 1937 



15, 1893, 1920; 4, 1901 



6445, 1896; 3402, 1949 



50, 194/'. 



66, 1890, 1927; 31, 1905 



19, 1941; 2, 1927 



16,1920; 2,1936 



16, 1894; 2, 1920 



221, 1924; 110, '27, '38 



Note — The first column in the above summary lists observations made during the month. 

 The second column lists the averages based on observations made from 1889 to 1938, 

 except that humidity lecords are based on observations made from 1929 to 1938. The 

 third column lists extremes observed from 1889 to 1952. 



