Monthly summary 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 5th, 30.74 



Minimum bth, 29.13 



Mean semi-daily 30 015 



Range 161 



Air Temperature 



Highest 6th, 56.0 



Lowest i6th, -i i.o 



Mean 22. i< 



Monthly range 67.0 



Highest mean daily 6th, 19th, 41.0 



Lowest mean daily 16, 7.3 



Mean maximum 30.8 



Mean minimum 1 3 S 



Greatest daily range i6th, 36.5 



Least daily range 26th, 8.0 



Precipitation. In inches 4.33 



Snow. In inches 18.0 



Maximum precipitation in 24 hrs.6th,i 31 

 Number of days on which .01 or more 

 inches of rain fell 12 



Wind (miles) 



Total movement 7279 



Greatest daily movement 29th, 457 



Least daily movement 16th, 40 



Mean hourly velocity 9.8 



Maximum velocity for 5 min .... 23rd, 38 

 (corrected to conform to 3 cup anemometer) 

 Wind (direction) 



Prevailing direction W 



North, days o 



Northeast, days o 



East, days o 



-Southeast, days i 



South, days 3 



Southwest, days 6 



West, days 10 



Northwest, days 11 



Weather 



iVTean relative humidity, per cent,. ..71.1 



Mean cloudiness, per cent 46 



Number of clear days 10 



Number of fair days 11 



N umber of cloudy days 10 



Number of hours bright sunshine. 139 4 

 Per cent of possible hours bright 



sunshine 47 



30-71 



29.18 



30.07 



1.54 



50-4 

 -7-4 

 24.1 



58.2 



3-4: 

 13 



5068 



6.8 



30 



WNW 



'3 



140 



47.6 



31.00, 1927 

 28.55, 1913 



2.18, 1913 



61.5. 1890 

 -23-5, 1907 



7.15, 1898 

 33, 1898, 1923; 1.75,1911 



18, 1923; 4, 1889 

 7770, 1908; 2896, 1S95 



40, 1913 



85. 3, 1927; 68 2, 1890 



66. 1898; 38, 1922 



16, 1922; 2. 1914 



iS, 1890, 1926; 3, 1916 



22, 1923; 4, i9-'0 



214, 1920; 76, 1923 



Note — The first column in tlie above summary gives observations made dnring^ the jiast 

 month. The second and third columns give the averages and e.xtremes observed tr<im iSSi;) 

 to 1028 for the same month of the year. 



