MONTHLY SUMMARY 



FEBRUARY, 1952 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum ZQ277, 24th 



Minimum 29.433, 11th 



Mean semi-daily 29.908 



Range 0.844 



Air Temperature, in degrees F. 



Highest 48, 2nd, 3rd 



Lowest 8, 24th 



Mean 29.2 



Range 40 



Highest mean daily 39.5, 2nd, 4th 



Lowest mean daily 17, 13th 



Mean maximum 38.2 



Mean minimum 20.2 



Greatest daily range .". 32, 1st 



Least daily range 5, 4th 



Degree-days of heating load for 



month 1037.5 



Degree-days cumulative for season 4579.5 



Precipitation, in inches 



Precipitation 1.97 



Snow 11.7 



Maximum precip. in 24 hrs 64, 17th 



Number of days with .01 or more 8 



Wind, in miles 



Total movement 4215 



Greatest daily movement 461, 12th 



Least daily movement 18, 24th 



Mean hourly velocity 6.1 



Maximum velocity 40, 12th 



Wind, direction 



Prevailing direction NW 



North, days 3 



Northeast, days 7 



East, days 



Southeast, days 1 



South, days 2 



Southwest, days 3 



West, days 1 



Northwest, days 12 



Weather 



Mean relative humidity, percent 81.0 



Mean cloudiness, percent 41.4 



Number of clear days 11 



Number of fair days 10 



Number of cloudy days 8 



Number of hours bright sunshine 160.6 



Percent of possible hours of 



bright sunshine 52.4 



Normal 



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 



66.6 



50.9 



10 



8 



10 



158 



53.4 



Extremes 



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, 1946 



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 records are based on observations made from 

 1929 to 1938. The third column gives extremes observed from 1889 to 1951. 



