MONTHLY SUMMARY 



FEBRUARY, 1950 



Normal 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.77, 8th 



Minimum 29.45, 24th 



Mean semi-daily 30.13 



Range 1.32 



Air Temperature, in Degrees F. 



Highest 46, 9th 



Lowest — 8, 21st 



Mean 24.5 



Range 54 



Highest mean daily 34.5, 9th 



Lowest mean daily 0, 20th 



Mean maximum 32.4 



Mean minimum 16.4 



Greatest daily range 35, 28th 



Least daily range 5, 14th 



Degree-days of heating load for month .1132 

 Degree-days cumulative for season. . . 4383 



Precipitation, in inches 



Precipitation 3.99 



Snow 23.8 



Maximum preclp. In 24 hrs 94, 14th 



Number of days with .01 or more 13 



Wind, in miles 



Total movement 4093 



Greatest daily movement 420, 20th 



Least daily movement 21,6th 



Mean hourly velocity 6.1 



Maximum velocity 32, 3rd, 25th 



Wind, direction 



Prevailing direction N 



North, days 12 



Northeast, days 3 



East, days 3 



Southeast, days 1 



South, days 



Southwest, days 2 



West, days 1 



Northwest, days 6 



Weather 



Mean relative humidity, percent 74.4 



Mean cloudiness, percent 65 



Number of dear days 8 



Number of fair days 10 



Number of cloudy days 10 



Number of hours bright sunshine 127.4 



Percent of possible hours of 



bright sunshine 43.2 



Thunder and lightning 



First Frost 



30.63 

 29.24 

 30.04 



1.38 



50.5 

 —7.4 

 23.7 

 58 



32.8 

 14.5 



3.19 

 13.99 



10 



4776 



7.1 

 31.7 



WNW 



66.6 



50.9 



10 



8 

 10 



158 



53.4 



Extremes 



31.05, 1920 

 28.56,1895 



1.89, '00, '08; .88, '13, '31 



65.0, 1930 



—23, 1943 



32.6, 1890; 11.6, 1934 



8.12, 1900; 0.62. 1901 

 48.75, 1893; 0.50, 1937 



15, '93, 1920; 4, 1901 



6445, 1896; 3402. 1949 



50, 1946 



66, '90, '27; 31, 1905 



19, 1941; 2, 1927 



16, 1920; 2, 1936 



U., LW4; 2, 1920 



221, 1924; 110, '27, '38 



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 1949. 



