MONTHLY SUMMARY 



MARCH, 1950 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.557, 4th 



Minimum 29.188, 23rd 



Mean semi-daily 29,945 



Range 1.369 



Air Temperature, in Degrees F. 



Highest 65, 28th 



Lowest — 9, 4th 



Mean 30.7 



Range 74 



Highest mean daily 47.5, 28th 



Lowest mean daily 3.5, 3rd 



Mean maximum 49.3 



Mean minimum 20.6 



Greatest daily range 37, 31st 



Least daily range 4, 27th 



Degree-days of heating load for month . 1085 

 Degree-days cumulative for season. . . 5468 



Precipitation, in inclies 



Precipitation 2.67 



Snow 5.6 



Maximum precip. in 24 hrs S5, 23rd 



Number of days with .01 or more 13 



Wind, in miles 



Total movement 5683 



Greatest daily movement 455, 9th 



Least daily movement 42, 4th 



Mean hourly velocity 7.64 



Maximum velocity 40 8th. 9th, 18th 



Normal 



Wind, direction 



NW 

 .10 



Prevailing direction 



North, days 



Northeast, days . 



E'ast, days 1 



Southeast, days 1 



South, days 5 



Southwest, days 1 



West, days 2 



Northwest, days 11 



Weather 



Mean relative humidity, percent 67 



Mean cloudiness, percent 51.1 



Number of clear days 14 



Number of fair days 7 



Number of cloudy days 10 



Number of hours bright sunshine 186.4 



Percent of possible hours of 



br'ght sunshine 50.4 



Thunder and lightning 8th, 28th 



First Frost 



30.57 



29.24 



30.04 



1.34 



63.8 



6.1 



34.4 



57.6 



43.2 

 25.4 



Extremes 



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, 190= 



48, 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 gives observations made during the month. 

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

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

 third rohimn gives extremes observed from 1889 to 1949. 



