MONTHLY Summary 



March, U 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.37, 3rd 



Minimum 29.29, 16th 



Mean semi-daiiy 29.869 



Range 1.08 



Air Temperature 



Highest 58, 4th 



Lowest L2, 11th 



Mean 31.5 



Monthly range 46 



Highest mean daily 42.0, 4th 



Lowest mean daily 21.0, 10th 



Mean maximum 39.4 



Mean minimum 23.5 



Greatest daily range 32, 4th, 31st 



Least daily range 5, 15th 



Precipitation 



Precipitation. In inches 3.38 



Snow, in inches 6.75 



Maximum precipitation in 24 hrs. 



1.86, 15th, 16th 

 Number of days on which .01 or more 



inches of precipitation fell. ... 8 



Wind (miles) 



Total movement 5,974 



Greatest daily movement 358, 28th 



Least daily movement 54, 8th 



Mean hourly velocity 8.0 



Maximum velocity, 5 min., .... 29, 26th 

 Wind (direction) 



Prevailing direction wnw 



North, days 2 



Northeast, days 



East, days 



Southeast, days 



South, days 3 



Southwest, days 3 



West, days 10 



Northwest, days 13 



Weather 



Mean relative humidity, per cent. . 60.1 



Mean cloudiness, per cent 46 



Number of clear days 17 



Number of fair days 7 



Number of cloudy days 7 



Number of hours bright sunshine . . 235 

 Percent of possible hours of bright 



sunshine 63.3 



30.60 



29.26 



30.02 



1.35 



63.9 



5.7 



34.2 



58.2 



3.68 

 8.11 



11 

 5,738 



7.7 

 29 



83.0 

 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, 1936; 3, 1915 

 7,628, 1932; 3,006, 1905 



48, 1932 



68, 1901; 27, 1915 



22, 1924; 3, 1901 



17, 1900; 4, 1895, 1936 



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 fjives the averages based on observations made from 1889 

 to 1928, except that humidity records are based on observations made from 1929 to 1986. 

 The third column gives extremes observed from 1889 to 198(;. 



