MONTHLY SUMMARY 



October, 1943 



Barometer, in inches 



(Readings reduced to sea level) 



JVIaxinnim 30.53, 11 th 



Aliiiimum _ 29.15, 4th 



Mean semi-daily 29.971 



Range 1.38 



Air Temperature, in degrees F. 



Highest 80, 9th 



Lowest 23, 1 1th 



Mean _.....51.4 



Range 57 



Highest mean daily 67.5, 15th 



Lowest mean daily 40.0, 25th 



Mean maximum 61.3 



Mean minimum 41.5 



Greatest daily range 44, 12th 



Least daily range 5, 26th 



Precipitation, in inches 



Precipitation .....3.88 



Snow 



Maximum precipitation in 24 hrs. 



1 .63, 26th, 27th 



Number of days with .01 or more 9 



Wind, in miles 



Total movement 4411 



Greatest daily movement 294, 29th 



Least daily movement 33, 11th 



Mean hourly velocity 6.0 



Maximum velocity 28, 9th 



Wind, direction 



Prevailing direction WNW 



North, days 3 



Northeast, days ...- 



East, days 1 



Southeast, days 4 



South, days 1 



Southwest, days 4 



West, days 6 



Northwest, days 12 



Weather 



Mean relative humidity, percent 69.0 



Mean cloudiness, percent 64 



Number of clear days 9 



Number of fair days 8 



Number of cloudy days 14 



Number hours bright sunshine 159 



Percent of possible hours of bright 



sunshine 46.6 



Thunder and lightning 27th 



First Frost Oct. 6 



Normal 



30.53 



29.42 



30.06 



1.11 



79.4 

 23.4 

 50.5 

 56.0 



3.29 



Extremes 



4074 



29.5 



W 



69.0 



48 

 10 

 10 

 11 

 175.0 



51.3 



Sept. 21 



30.68, 1929 

 29.00, 1926 



1.47, 1926; .76, 1899 



90.5, 1908 



17, 1936 



56.4, 1920; 43.2, 1890 



8.81, 1911; .01, 1924 



15, 1913; 1, 1897, 1924 



5,467, 1910; 2,540, 1894 



42, 1937 



67, 1932; 18, 1924 



21, 1938; 1, 1911 



17, 1924; 3. 1938 



19, 1896; 3, 1924 



232, '23, '38; 91, 1913 



Aug. 22, '94, '95 ; Oct. 15, '39 



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. 



