Monthly Summary 



May, 1929 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum . . . .' 30.54, 14th 



Minimum 29.33, 2nd 



Mean semi-daily 30.045 



Range 1.21 



Air Temperature 



Highest 92.0, 30th 



Lowest 31.5, 10th 



Mean 56.6 



Monthly range 60.5 



Highest mean daily 78.5, 30th 



Lowest mean daily 44.5, 8th 



Mean maximum 70.0 



Mean minimum 44.1 



Greatest daily range 39.5,27th 



Least daily range 7.0, 21st 



Preciphation 



Precipitation. In inches 4.17 



Maximum precipitation in 24 hrs. 1.25, 



2nd, 3rd 

 Number of days on which .01 or 



more inches of rain fell 12 



Wind (miles) 



Total movement 5417 



Greatest daily movement .... 410, 3r5 



Least daily movement 53, 26th 



Mean hourly velocity 7.3 



Maximum velocity for 5 min. ... 35, 16th 



icunected to ccjnform to 3 cup anemometer) 

 Wiiul (direction) 



Prevailing direction sw 



North, days 2 



Northeast, days 



East, days 



Southeast, days 5 



South, days 9 



Southwest, days 5 



West, days 6 



Northwest, days 4 



Weather 



Mean relative humidity, per cent 60.8 



Mean cloudiness, per cent 48 



Number of clear days 11 



Number of fair days 14 



Number of cloudy days 6 



Number of hours bright sunshine 241.3 

 Percent of possible hours of bright 



sunshine 53.3 



Thunder and lightning 24th, 29th, 30th 



Frosts 10th, 23rd 



Last frost 23rd 



30.38 

 29.51 

 29.95 



85.5 

 30.8 

 56.8 

 54.6 



3.63 



12 

 4540 



6.1 

 25 



70.7 



51.5 



10 



11 



10 



250.1 



55.2 



12th 



30.55, 1895 

 29.16, 1893 



1.16, 1893; 0.60, 1899 



94.5, 1911 

 24.0, 1900 



6.91, 1901; 0.48, 1903 



20, 1901; 5, 1903 

 5946, 1907; 2180, 1894 



35, 1912 



83.9, 1927 ; 59.3, 1891 



70, 1901 ; 30, 1923 



20, 1923 ; 0, 1927 



17, 1907, 1926 ; 5, 1923 



20, 1927; 3, 1903, 1922 



334, 1922 ; 137, 1927 



J'e3, 1908; Apr.23, 1904 



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

 month. The second and third columns give the averages and extremes observed from 1S89 

 to 192S for the same month ol the year. 



