Monthly Summary 



October. 1938 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.49, 3rd j 30.53 



Minimum 29.53, 24th,25th I 29.42 



Mean semi-daily 30.116 | 30.059 



Range 0.96 1.11 



Air Temperature 



Highest 85, I2th,17th 79-7 



Lowest 30, 8th 23. 4 



Mean 55.2 50-4 



Range 55 56 3 



Highest mean daily 68, 17th 



Lowest mean daily 45.5, 31st 



Mean maximum 66.3 



Mean minimum 44.0 



Greatest daily range 42, 11th 



Least daily range 6, 14th 



Precipitation 



Precipitation. In inches 2.49 3.35 



Snow, in inches 



Maximum precipitation in 24 hrs. 



1.35, 24th 

 Number of days on which .01 or more 



inches of precipitation fell 6 



Wind (miles) 



Total movement 3915 



Greatest daily movement 258,30th 



Least daily movement 29, 15th 



Mean hourly velocity 5.3 



Maximum velocity, 5 min., 39, 24th 



Wind (direction) 



Prevailing direction wnw 



North, days 8 



Northeast, days 



East, days 1 



Southeast, days 4 



South, days 7 



Southwest, days 1 



West, days 4 



Northwest, days 6 



Weather 



Mean relative humidity, per cent 67.1 69.2 



Mean cloudiness, per cent 40 47.6 



Number of clear days 21 8 



Number of fair days 3 H 



Number of cloudy days 7 12 



Number of hours bright sunshine 232 171.0 



Percent of possible hours of bright 



sunshine 68 50.1 



Thunder and lightning 



Frost 2nd,4th, 5th, 7th, 22nd, 26th 



First frost Sept. lu|S 19th 



4,023 



5.4 



27 



30.68, 1929 

 29.00, 1926 



1.47, 1926; 0.76, 1899 



90.5, 1908 

 17, 1936 



8.81, 1911; 0.01, 1924 



15, 1913; 1, 1897, 1924 

 5,467, 1910; 2,540, 1894 



42, 1937 



67, 1932; 18, 1924 

 16, 1934; 1, 1911 

 17, 1924; 4, 1936 



19, 1896; 3, 1924 

 232,1923; 91,1913 



Aug. 22, '94, '95; Oct. 13, '09 



Note— The first column in the above summary gives observations made during the 

 month. The second column Kives the averages based on observations made from l«89 

 to 1928. except that humidity records are based on observations made from 1929 to I9.S7. 

 The third column gives extremes observed from 1889 te 1937 



