Monthly Summary 



November 1987 



Normal 



Barometer 



( Readings reduced to sea level) 



Maximum 30.58, 1st 



Minimum 29.36, 14th 



Mean semi-daily 30.079 



Range 1.22 



Air Temperature . 



Highest 63, 9th 



Lowest 14, 23rd 



Mean 39.9 



Monthly range 49 



Highest mean daily 54.5, 9th 



Lowest mean daily 25.0, 22nd 



Mean maximum 49.2 



Mean minimum 30.5 



Greatest daily range 33, 7th 



Least daily range 1, 20th 



Precipitation 



Precipitation. In inches 4.86 



Snow, in inches 3.00 



Maximum precipitation in 24 hrs. 



2.34, 28th, 29th 

 Number of days on which .01 or more 



inches of precipitation fell ... 9 



Wind (miles) 



Total movement 3,794 



Greatest daily movement 316, 9th 



Least daily movement 32, 12th 



Mean hourly velocity 5.3 



Maximum velocity, 5 min., 32, 3rd, 6th 



Wind (direction) 



Prevailing direction w 



North, days 



Northeast, days 1 



East, days 



Southeast, days 4 



South, days 6 



Southwest, days 



West, days 9 



Northwest, days 10 



Weather 



Mean relative humidity, per cent. . 69.8 



Mean cloudiness, per cent 55.2 



Number of clear days 7 



Number of fair days 11 



Number of cloudy days 12 



Number of hours bright sunshine . . 132 

 Percent of possible hours of bright 



sunshine 45.1 



Thunder and lightning 15th 



First snow 19th Nov 



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 



70.1 



53.5 



6 



9 



15 



L21.0 



41.3 



Extremes 



30.87, 1932 

 28.73, 1904 



1.84, 1904; 0.94, 1935 



75.0, 1924 

 3.5, 1891 



8.64, 1927; 0.63, 1917 

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

 22, 27, 32, 34 



22, 1921; 2, 1904 

 5,978, 1906; 2,589, 1889 



40, 1915 



72, 1900, '27; 34, 1917 



15, '03; 1, '00 '11 '27 



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



24, '27: 9, '90, '05, '17 



182, 1903; 66, 1927 



Oct. 10, '25, Nov. 27, '31 



NoTK-The tirst coluiuii in the above summary gives observations made diirinif the 

 month. The second column ffives the averay:es based on observations made from 1889 

 to 1928. except that tuimidity records are based on observations made from 1929 to lyse 

 The third column jrives extremes observed from 1889 to 198(1 



