MONTHLY SUMMARY 



February, 1942 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum ; 30.46, 4th 



Minimum 29.28, 1st 



Mean semi-daily 29.831 



R ange I.IS 



Air Temperature, in degrees F. 



Highest 44, 17th 



Lowest 0, 3rd, 4th 



Mean 24.0 



Range 44 



Highest mean daily 38.5, 17th 



Lowest mean daily 8.5, 3rd 



Mean maximum 32.0 



Mean minimum 15.9 



Greatest daily range,. . . .24, 4th, 10th, 24th 



Least daily range 7, 6th 



Precipitation, in inches 



Precipitation 1.66 



Snow 8.00 



Maximum precipitation in 24 



hrs 0.56, 5th 



Number of days with .01 or more 7 



Wind, in miles 



Total movement 6531 



Greatest daily movement 401, 21st 



Least daily movement 70, 4th 



Mean hourly velocity 9.7 



Maximum velocity 32, 13th, 21st 



Wind, direction 



Prevailing direction NW 



North, days 6 



Northeast, days 



East, days 



Southeast, days 



South, days 



Southwest, days 



West, days 1 



Northwest, days 21 



Weather 



Mean relative humidity, percent 67.1 



Mean cloudiness, percent 43 



Number of clear days 17 



Number of fair days 4 



Number of cloudy days 7 



Number hours bright sunshine 190 



Percent of possible hours of bright 



• sunshine 64.2 



Thunder and lightning 



Normal 



Extremes 



30.63 



29.24 



30.04 



1.38 



50.5 

 -7.4 

 23.7 



32.8 

 14.5 



3.19 

 13.99 



10 



4770 



7.1 

 31.7 



WNW 



31.05, 1920 

 28.50, 1895 



), '00, '08; .88, '13 '31 



65.0, 1930 

 -22.5, 1918 



8.12, 1900; 0.62, 1901 

 48.75, 1893; 0.50, 1937 



15, '93, '20; 4, 1901 

 6445,1896; 3438,1892 



48, 1934, 1937 



53.4 



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 1941. 



