MONTHLY SUMMARY 



MARCH 1953 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.690, 1 1th 



Minimum 29.365, 30th 



Mean semi-daily 30.021 



Range 1.325 



Air Temperature, in degrees F. 



Highest 67, 23rd 



Lowest 8,11th 



Mean 38.2 



Range 59 



Highest mean daily 55.5, 24th 



Lowest mean daily 20.5, 10th 



Mean maximum 45.9 



Mean minimum 30.5 



Greatest daily range 35.0, 23rd 



Least daily range 5.0, 19th 



Degree-days of heating load for month 83 1.5 

 Degree-days cumulative for season. . . 5132 



Precipitation, in incties 



Precipitation S.28 



Snow T 



Maximum precip. in 24 hrs 1.77, 13th 



Number of days with .01 or more 15 



Wind, in miles 



Total movement 4829 



Greatest daily movement 437, 30th 



Least daily movement 13, 15th 



Mean hourly velocity 6.5 



Maximum velocity 48, 5th 



Wind, direction 



Prevailing direction NW 



North, days 3 



Northeast, days — 



East, days 1 



Southeast, days 5 



South, days 5 



Southwest, days 1 



West, days 5 



Northwest, days 11 



Weather 



Mean relative humidity, percent 74.7 



Mean cloudiness, percent 55.5 



Number of clear days 14 



Number of fair days 8 



Number of cloudy days 9 



Number of hours bright sunshine. . . . 178.6 

 Percent of possible hours of 



bright sunshine 48.3 



Normal 



30.57 



29.24 



30.04 



1.34 



63.8 



6.1 



34.4 



57.6 



43.2 

 25.4 



949 



5876 



3.70 



7.47 



11 



5944 



1.1 

 31.2 



WNW 



Extremes 



64.2 



51.8 



11 



10 



10 



199 



53.6 



31.05, 1943 

 28.47, 1914 



2.10, 1914; 0.85, 1915 



85, 1945 

 14, 1948 



7.89, 1942; 0.12, 1915 

 27, 1899; 0, 1921 



17, 1890, 1913, 1936; 3, 1915 



8182, 1896; 3006, 1905 



48, 1932, 1939, 1941, 1942 



68, 1901; 27, 1915 



22, 1924; 3, 1901 



17, 1900; 1, 1943 



21, 1901; 1, 1915 



292, 1924; 93, 1910 



•^qX.?. — The first column in the above summary lists observation^- 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 192'^ to 1938. The 

 third column lists extremes observed from 1889 to 1952. 



