Monthly Summary 



November, 1931 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.69, 20th 



Minimum 29.62,30th 



Mean semi-daily 29.811 



Range 1.07 



Air Temperaiure 



Highest 72, 10th 



Lowest 14, 28th 



Mean 44.1 



Monthly range 58 



Highest mean daily 60, 22nd, 24th 



Lowest mean daily 23.5, 28th 



Mean maximum 52.6 



Mean minimum 35.7 



Greatest daily range 41, 10th 



Least daily range 4, 20th 



Precipitation 



Precipitation. In inches 1.55 



Snow, in inches 1.0 



Maximum precipitation in 24 hrs. 0.62, 



15th, 16th 

 Number of days on which .01 or 



more inches of rain fell 10 



Wind (miles) 



Total movement 4,061 



Greatest daily movement .... 303, 25th 



Least daily movement 39, 27th 



Mean hourly velocity 5.6 



Maximum velocity for 5 min.28,13th,25th 



(currecceii to conform to ;i cup anemometer) 



Wind (direction) 



Prevailing direction sw 



North, days 



Northeast, days 



East, days 



Southeast, days 6 



South, days 8 



Southwest, days 3 



West, days 3 



Northwest, days 10 



Weather 



Mean relative humidity, per cent . . 71.7 



Mean cloudiness, per cent 68 



Number of clear days 3 



Number of fair days 10 



Number of cloudy days J.7 



Number of hours bright sunshine 88.8 

 Percent of possible hours of bright 



sunshine 3q 



Thunder and lightning 



30.58 



29.34 



30.046 



1.29 



65.3 

 13.8 

 38.6 

 51.4 



3.45 

 2.05 



9 



4,564 



6.3 

 29 



76.3 



53.5 



6 



9 



15 



121.0 



41 



30.86, 1896 

 28.73, 1904 



1.84, 1904; 0.98, 1890 



75.0, 1924 

 3.5, 1891 



8.64, 1927; 0.63, 1917 

 9,24; t,89,93,03,12,18,19,22,27 



22, 1921; 2, 1904 

 5,978, 1906; 2,589, 1889 



40, 1915 



85.9, 1907; 67.8, 1890 

 72, 1900, 1927; 34, 1917 

 15, 1903; 1, 1900, 1911, 1927 



16, 1912; 4, 1889, 1930 

 24, 1927; 9, 1890, 1905, 1917 

 182, 1903; 66, 1927 



NoTK— I'lie first column in tlie above summary gives observations made durinj;- tbe 

 month. The second column urivea averages based on observations made from lB«y to 

 J92«. The third column gives e.\treme8 observed from 18»i» to 1930. 



