Monthly Summary 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.17, 15th, 24th 



Minimum 29.62, 30th 



Mean semi-daily 29.908 



Range 0.55 



Air Temperature 



Highest 97, 29th 



Lowest 36, 2nd 



Mean 68.3 



Monthly range 61 



Highest mean daily 83.5, 29th 



Lowest mean daily 51.5, 18th 



Mean maximum 80.7 



Mean minimum 56. L 



Greatest daily range 44, 24th 



Least daily range 9, 26th 



Precipitation 



Precipitation. In inches 3.68 



Snow, in inches 



Maximum precipitation in 24 hrs. 1.24, 



9th 

 Number of days on which .01 or more 

 inches of rain fell 10 



>V'iiid (niiles) 



Total movement 3,874 



Greatest daily movement 255, 1st 



Least daily movement 76, 27th 



Mean hourly velocity 5.4 



Maximum velocity for 5 min 36, 3rd 



(cm lected to conforui tit H c-ni) aiiemonieter) 

 WIinI (direction) 



Prevailing direction s 



North, days 



Northeast, days 



East, days 1 



Southeast, days 15 



South, days 



Southwest, days 2 



West, days 3 1 



Northwest, days 9 



Weather 



Mean relative humidity, per cent . . 65.3 



Mean cloudiness, per cent 49.5 



Number of clear days 16 



Number of fair days 9 



Number of cloudy days 5 



Number of hours bright sunshine 288.9 

 Percent of possible hours of bright 



sunshine 63.2 



Thunder and Lightning, . .3rd, 6th, 9th 



21st, 29th 

 Frosts 2nd 



30.31 



29.56 



29.961 



.75 



9L1 

 40.0 

 65.4 

 51.2 



3.54 



10 



3,584 



5.0 

 23 



73.9 

 50.1 



9 

 13 



8 

 257.4 



56.2 



30.54, 1889 

 29.24, 1902 



1.27, 1902; 0.52, 1916 



101.0, 1919 

 34.0, 1891 



9.68, 1922; 0.76, 1908 



17, 1922 ; 4, 1908 



4,571, 1908; 1,409, 1906 



40, 1932 



85.9, 1922; 63.2, 1932 

 71, 1903; 28, 1908 



22, 1908; 1, 1907, 1926 



23, 1912; 4, 1895, 1903 



22, 1903; 1, 1923 

 362, 1908; 102, 1903 



None— The first column in the above summary irives observations maile duiint;- the 

 montli. The second column irives the averages ba.sed on observations made from ls»'.i to 

 liii'tv. Tlie tliird column (fives extremes observed from 1889 to l'.t3'2. 



