MONTHLY SUMMARY 



October, 1942 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.66, 13th 



Minimum 29.42, 26th 



Mean semi-daily „ 30.085 



Range 1.24 



Air Temperature, in degrees F. 



Highest 76, 9th 



Lowest - 26, 29th 



Mean _ „ 52.7 



Range „ - - — - 50 



Highest mean daily „ 64, 22nd 



Lowest mean daily „ _ 41, 27th 



Mean maximum 64.9 



Mean minimum „ 40.4 



Greatest daily range Zl , 8th 



Least daily range „ 13, 16th 



Precipitation, in inches 



Precipitation _._ _ 3.27 



Snow _ „ — 



Maximum precipitation in 24 hrs 1.22, 



17th, 18th 



Number of days with .01 or more 6 



Wind, in miles 



Total movement _ 3209 



Greatest daily movement 196, 27th 



Least daily movement 22, 14th 



Mean vel oci ty _ - 4.3 



Maximum velocity 28, 19th 



Wind, direction 



Prevailing direction W 



North, days 3 



Northeast, days .0 



East, days 



Southeast, days 8 



South, days _ 2 



Southwest, days 3 



West, days 7 



Northwest, days ~ 8 



Weather 



Mean relative humidity, percent li^ 



Mean cloudiness, percent 51 



Number of clear days _ 14 



Number of fair days 8 



Number of cloudy days ....„ 9 



Number hours bright sunshine 195 



Percent of possible hours of bright 



sunshine - - 57.2 



Thunder and lightning — 



First frost Sept. 29 



Normal 



30.53 



29.42 



30.06 



1.11 



79.4 



23.4 

 50.5 

 56.0 



3.29 



9 



4074 



29.5 

 W 



Extremes 



69.0 



48 

 10 

 10 

 11 



175.0 



51.3 

 Sept. 21 



30.68, 1929 

 29.00, 1926 



1.47, 1926; :i(i, 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 

 17. 1924 

 19, 1896 



1, 1911 

 3, 1938 

 3, 1924 



lil, 'IZ, '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 1941. 



