MONTHLY SUMMARY 



MARCH, 1952 



Normal 



Extremes 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.381 



Minimum 29.162 



Mean semi-daily 29.818 



Range 1.219 



Air Temperature, in degrees F. 



Highest 66, 26th 



Lowest 3, 2nd 



Mean 35.3 



Range 63 



Highest mean daily 47, 26th 



Lowest mean daily 20.5 1st, 2nd 



Mean maximum 44.0 



Mean minimum 26.6 



Greatest daily range 38, 26th 



Least daily range 5, 7th, 23rd 



Degree-days of heating load for 



month 919.5 



Degree-days cumulative for season, 5499.0 



Precipitation, in inches 



Precipitation 3.17 



Snow 7.4 



Maximum precip. in 24 hrs 1.37, 11th 



Number of days with .01 or more 11 



Wind, in miles 



Total movement 4362 



Greatest daily movement 456, 12th 



Least daily movement 36, 2nd, 7th 



Mean hourly velocity 5 9 



Maximum velocity 32, 11th, 15th 



Wind, direction 



Prevailing direction NW 



North, days 1 



Northeast, days 7 



East, days 



Southeast, days 8 



South, days 



Southwest, days 



West, days 



Northwest, days 15 



Weather 



Mean relative humidity, percent 79.0 



Mean cloudiness, percent 53.4 



Number of clear days 14 



Number of fair days 3 



Number of cloudy days 14 



Number of hours bright sunshine 226.2 



Percent of possible hours of 



bright sunshine 61.2 



Thunder and lightning — 



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 



7.7 

 31.2 



WNW 



64.2 



51.8 



11 



10 



10 



199 



53.6 



31.05, 1943 

 28.47, 1914 



2.10, 1914; 0.85, 1915 



85, 1929 

 -7.5, 1906 



7.89, 1942; 0.12, 1915 

 27, 1899; 0, 1921 



17, 1890, 1913, 1936; 3, 1915 



8182, 1896 ; 3006, 1905 



?, 1932, 1939, 1941, 1942 



68, 1901; 27, 1915 



22, 1924; 3, 1901 



17, 1900; 1, 1943 



21, 1901 ; 1, 1915 



292, 1924; 93, 1901 



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. 



