Monthly summary 



March. 19^5 



Normal 



Barometer 



(Readinjjs reduced to sea level) 



Maximum 30.71, 9th 



Minimum 29.48, 13th 



Mean semi-daily 30.06 



Range 1.23 



Air Teinperalure 



Highest 68, 16th 



Lowest 7, 1st 



Mean 35.8 



Monthly range ... 61 



Highest mean daily 49.5, l6th 



Lowest mean daily 20.5, 1st 



Mean maximum 45.4 



Mean minimum 26.2 



Greatest daily range 37, 16th 



Least daily range 5, 13th 



Precii)i<a<ioii 



Precipitation. In inches 1.48 



Snow, in inches 4.00 



Maximum precipitation in 24 hrs. 0.81 



28th 

 Number of days on which .01 or more 



inches of rain fell 8 



M'ind (miles) 



Total movement 5462 



Greatest daily movement 390, 24th 



Least daily movement 70, 21st 



Mean hourly velocity 7.3 



Maximum velocity for 5 min., 45, 17th, 

 24th 



Wind (direction) 



Prevailing direction sw 



North, days 2 



Northeast, days 



East, days 1 



Southeast, days 12 



South, days 1 



Southwest, days 



West, days 7 



Northwest, days 8 



Weather 



Mean relative humidity, per cent. . 67.8 



Mean cloudiness, per cent 47.0 



Number of clear days 13 



Number of fair days 6 



Number of cloudy days 12 



Number of hours bright sunshine .198 

 Percent of possible hours of bright 



sunshine 53 



Thunder and Lightning 



Frosts 



30.60 



29.26 



30.02 



1.35 



63.9 



5.7 



34.2 



58.2 



Extremes 



3.68 

 8.11 



11 



5,738 



7.7 

 29 



75.0 

 51.0 



11 

 9 



11 

 201 



54.2 



30.96, 1904 

 28.47, 1914 



2.10, 1914; 0.85, 1915 



79.5, 1907, 1921 

 -7.5, 1906 



7.13, 1899; 0.12, 1915 

 27, 1899; 0, 1921 



.17, 1890, 1913; 3, 1915 

 7,628, 1932; 3,006, 1905 



48, 1932 



86.8, 1916; 59.5, 1932 

 68,1901; 27, 1915 

 22, 1924; 3, 1901 

 17,1900; 4, 1895 

 21, 1901; 1, 1915 

 292, 1924; 93, 1901 



NoTK— The first coluuin in the above snmniary sives observations made during the 

 month. The second column gives the averages based on observations made from 18t<9 to 

 1928. The third column gives extremes observed from 1889 to 1934. 



