MONTHLY SUMMARY 



NOVEMBER, 1949 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.299, 12th, 13th 



Minimum 29,376, 25th 



Mean semi-daily 29.877 



Range 0.923 



Air Temperalure, in Degrees F. 



Highest 68, 8th 



Lowest 12, 27th 



Mean 40 



Range 56 



Highest mean daily 59.5, 11th 



Lowest mean daily 17, 27th 



Mean maximum 48.7 



Mean minimum 32.1 



Greatest daily range . , 33, 10th 



Least daily range 7, 29th 



Degree-days of heating load for month. . . 742 

 Degree-days cumulative for season .... 1151 



Precipitation, in inches 



Precipitation 1.79 



Snow 2.3 



Maximum precip. in 24 hrs 0.58., 29th 



Number of days with .01 or more 11 



Wind, in miles 



Total movement 3133 



Greatest daily movement 361, 26th 



Least daily movement 30, 15th 



Mean hourly velocity 4.6 



Maximum velocity 32, 26th 



Wind, direction 



Prevailing direction NW 



North, days 3 



Northeast, days 6 



East, days 



Southeast, days 4 



South, days 4 



Southwest, days 1 



\\ est, days 5 



Northwest, days 7 



Weather 



Mean relative humidity, percent. 



Mean cloudiness, percent 



Number of clear days 



Number of fair days 



Number of cloudy days 



Number of hours bright sunshine. 

 Percent of possible hours of 



bright sunshine 



Thunder and lightning 



First Frost 



.75.9 

 .62.4 



:.. 7 



...14 

 ....9 

 138.1 



Normal 



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 



WN\\' 



70.6 



55.1 



6 



9 



15 



121 



47.0 41.3 

 Nov. 6 



Extr 



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, 1096, ;2,589, 1889 



48, 1948 



78, 1947; 34, 1917 



15, 1903; 0. 1948 



16, 1912; 4. 1889, 1930, '32, '35 



24, 1927; 9, 1905, 1917 



821, 1903; 44, 1948 



Oct. 10, 1925; 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 1948. 



