MONTHLY SUMMARY 



March, 1943 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 31.05, 9th 



Minimum ___.29.43, 6th 



Mean semi-daily .__ 30.164 



Range 1 .62 



Air Temperature, in degrees F. 



Highest ■_ 68, 26th 



Lowest .-7, 9th 



Mean _ 32.9 



Range -— - 75 



Highest mean daily 49, 26th 



Lowest mean daily 9.5, 9th 



Mean maximum -41 .4 



Mean minimum 24.4 



Greatest daily range 38, 26th 



Least daily range 7, 17th, 31st 



Precipitation, in inches 



Precipitation ■. 3.07 



Snow 7.50 



Maximum precipitation in 24 hrs. — .84, 19th, 



20th 

 Number of days with .01 or more 9 



Wind, in miles 

 Total movement 5380 



Greatest daily movement ...384, 23rd 



Least daily movement 55, 9th 



Mean hourly velocity _. 7.2 



Maximum velocity 28, 7th, 23rd 



Wind, direction 



Prevailing direction __._ ..WNW 



North, days 



Northeast, days 



East, days _ ,_ 



Southeast, days 6 



South, days _1 



Southwest, days 1 



West, days —.5 



Northwest, days ...18 



Weather 



Mean relative humidity, percent 65.4 



Mean cloudiness, percent ...51 



Number of clear days 19 



Number of fair days ...1 



Number of cloudy days . -._ 11 



Number hours bright sunshine 220 



Percent of possible hours of bright 



sunshine _ _ 59 



Tliunder and lightning I7th 



3.70 

 7.47 



11 



5944 



7.7 

 31.2 



WNW 



64.2 



51.8 



11 



10 



10 



199 



53.6 



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 



22, 1924; 3, 1901 



17, 1900; 3, 1941 



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 1942. 



