MONTHLY SUMMARY 



March, 1946 



Barometer, in inches 



1 Readings reduced to sea level) 



Maximum 30.46, 12th 



Minimum _.. 29.44. 9th 



Mean semi -daily 30.073 



Range ....__ L. 1.02 



Air Temperature, in degrees F. 



Highest 83. 29th 



Lowest . - 8, 1st 



Mean . ._ _. 44.5 



Range _ 75 



Highest mean daily 65, 29th 



Lowest mean daily 23.5. 1st 



Mean maximum . .57.8 



Mean minimum 31.5 



Greatest daily range 42, 21st, 22nd 



Least daily range 4, 2nd 



Precipitation, in inches 



Precipitation ....1.60 



Snow .. T 



Maximum precipitation in 24 hrs. .0.51, 25th 

 Numher of days with .01 or more 7 



Wind, in miles 



Total movement 4437 



Greatest daily movement ....342, 23rd 



Least daily movement 40, 5th 



Mean hourly velocity . 6.0 



Maximum velocity 39, 9th 



Wind, direction 



Prevailing direction WSW 



North, days ...1 



Northeast, days 



East, days — 5 



Soutlieast. days .....4 



South, days 5 



Southwest, days 2 



West, days 6 



Northwest, days 8 



Weather 



Mean relative humidity, percent 64.2 



Mean cloudiness, percent 36 



Number of clear days — 21 



Number of fair days 7 



Number of cloudy days 3 



Number of hours bright sunshine 283 



Percent of possible hours of bright 



sunshine 76.2 



Thunder and lightning — 



Normal 



30.57 



29.24 



30.00 



1.34 



63.8 



6.1 



34.4 



57.6 



43.2 

 25.4 



3.70 

 7.47 



11 



5944 



7.7 

 31.2 



WNW 



64.2 



51.8 



11 



10 



10 



199 



53.6 



Extremes 



31.05, 1943 

 28.47, 1914 



2.10. 1914; 0.85, 1915 



85, 29th 

 -7.5, 1906 



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, 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 records are based on observations made 

 from 1929 to 1938. The third column gives extremes observed from 1889 to 1945. 



