MONTHLY SUMMARY 



November, 1946 



Normal 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum _ -__ 30.66, 18th 



Minimum 29.60, 8th 



Mean semi-daily 30.081 



Range 1 .06 



Air Temperature, in degrees F. 



Highest -68, 4th 



Lowest -.- - 19, 1 9th 



Mean 43.2 



Range -— — 49 



Highest mean daily 58.5, 4th 



Lowest mean daily 30.0, 30th 



Mean maximum 51.7 



Mean minimum — 34.7 



Greatest daily range 30, 16th, 19th 



Least daily range . 6, 8th 



Precipitation, in inches 



Precipitation — „.. .70 



Snow — - - Trace 



Maximum precip. in 24 hrs. .- 0.34, 8th 



Number of days with .01 or more .— — .. 5 



Wind, in miles 



Total movement _. _ _..._ 4358 



Greatest daily movement 397, 5th 



Least daily movement 34, 21st 



Mean hourly velocity _ 6.1 



Maximum velocity 30, 5th 



Wind, direction 



Prevailing direction — WSW 



North, days 



Northeast, days 



East, days 3 



Southeast, days 6 



South, days „_-,_ 1 



Southwest, days ^ 3 



West, (lays ..— 10 



Northwest, days 7 



Weather 



Mean relative humidity, percent 68.8 



Mean cloudiness, percent 57 



Number of clear days 11 



Number of fair days 5 



Number of cloudy days ...14 



Number of hours bright sunshine ...126 



Percent of possible hours of bright 



sunshine ..— 43 



Thunder and lightning — 



First frost 13th 



30.59 



29.30 



30.05 



1.29 



66.0 

 12.9 

 38.9 

 53.0 



3.41 

 2.34 



4531 



6.3 

 30.3 



WNW 



70.6 



55.1 



6 



9 



15 



121 



41.3 



Nov. 6 



Extremes 



30.87, 1932 

 28.73, 1904 



1.84, 1904; .89, 1943 



75, 1924, 1938 



-4, 1938 



44.1, 1931; 33.6, 1901 



8.64, 1927; .63, 1917 

 13.50, 1938 



22, 1921 ; 2, 1904 



5.978, 1906; 2,589, 1889 



44, 1938 



72, 1900, 1927; 34, 1917 



15, 1903; 1, 1900. 1911, 1927 



16, '12; 4. '89, '30. '32, '35 



24,1927; 9. 1905, 1917 

 182, 1903; 66, 1927 



Oct. 10, '25; Dec. 13, 1941 



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 



