MONTHLY SUMMARY 



Nov mber 1940 



Normal 



Extremes 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.63, 19tli 



Minimum 29.64, 27th, 28th 



Mean .semi-daily 30.086 



Range 0.99 



Air Temperature, in degrees F. 



Highest 69, 22nd 



Lowest 11,29th 



Mean 39.4 



Range 58 



Highest mean daily 56, 22nd 



Lowest mean daily 21.5, 28tli, 29th 



Mean maximum 47.2 



Mean minimum 31 



Greatest daily range 30, 4th 



Least daily range 5, 14th 



Precipitation, in inches 



Precipitation 6.31 



Snow 13.00 



Maximum precipitation in 24 hrs. 2.25, 2nd 



Number of days with .01 or more 11 



Wind, in miles 



Total movement 4986 



Greatest daily movement 288, 25th 



Least daily movement 31, 10th 



Mean hou ly velocity 6.9 



Maximum velocity 32, 3rd 



Wind, direction 



Prevailing direction NW 



North, days 7 



Northea.«t, days 



East, days 



Southeast, days 3 



South, days 7 



Southwest, days 2 



West, days 1 



Northwest, daJ^s 10 



Weather 



Mean relative humidity, percent 77 



Mean cloudiness, percent 67 



Number of clear days 4 



Number of fair days 7 



Number of cloudy days 19 



Number hours bright sunshine 81 



Percent of possible hours of bright 

 sunshine 27.6 



First Snow Nov. 16 



30.59 



29.30 



30.05 



1.29 



66.0 

 12.9 

 38.9 

 53.0 



3.41 

 2.34 



9 

 4531 



6.3 

 30.3 



WNW 



70.6 



55.1 



6 



9 



15 



121 



41.3 



Nov. 6 



30.87, 1932 

 28.73. 1904 



1.84, 1904; .94, 1905 



75, 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; Nov. 27, '31 



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 1939. 



