MONTHLY SUMMARY 



October, 1946 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum .30.56, 28th 



Minimum 29.46, 18th 



Mean semi-daily .„. .30.114 



Range 1.10 



Air Temperature, in degrees F. 



Highest '. 84, 6th, 7th 



Lowest - 28, 22nd 



Meaii 54.7 



Range 56 



Highest mean daily 70, 30th 



Lowest mean daily . 41.5, 20th 



Mean maximum : 67.4 



Mean minimum 41.9 



Greatest daily range. 39, 4th, 7th, 23rd 



Least daily range 10, 26th 



Precipitation, in inches 



Precipitation 1.51 



Snow — 



Maximum precip. in 24 hrs....-0.62, 12th, 13th 

 Number of days with .01 or more 6 



Wind, in miles 



Total movement 2914 



Greatest daily movement 283, 1st 



Least daily movement 24, 6th, 24th 



Mean hourly velocity ,........_ 3.9 



Maximum velocity 28, 19th, 31st 



Wind, direction 



Prevailing direction . SW 



North, days 



Northeast, days 1 



East, days 



Soutlieast, days 7 



South, days 2 



Southwest, days 10 



West, days 6 



Northwest, days _ 5 



Weather 



Mean relative humidity, percent 74.8 



Mean cloudiness, percent 49 



Number of clear days . ...13 



Number of fair days '.. ..10 



Number of cloudy days 8 



Number of hours bright sunshine 200 



Percent of possible hours of bright 



sunshine 58.7 



Thunder and lightning — 



First frost Oct. 22 



Normal 



3.29 

 9 



4074 



5.4 

 29.5 



W 



69.0 

 48 

 10 

 10 

 11 

 175.0 



51.3 



Sept. 21 



Extremes 



8.81, 1911; .01, 1924 



15, 1913; 1, 1897, 1924 



5,467, 1910; 2,540, 1894 



42, 1937 



67, 



21, 



17, 



19, 



>32 '^ 



1932; 

 1938 

 1924 

 1896 



3, '38. 



18, 1924 



1, 1911 



'3, 1938 



3, 1924 



91, 1913 



Aug.22, '94, '95;Ocl. 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 1945 



