MONTHLY SUMMARY 



JUNE 1949 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.40, 10th 



A'linimum 29.58, 22nd 



Mean semi-daily 29.77 



Range 0.82 



Air Temperalure, in Degrees F. 



Highest 94,21st 



Lowest 39,9th 



Mean 71.9 



Range 55 



Highest mean daily 82, 21st 



Lowest mean daily 55, 8th 



Mean maximum 84.8 



Mean minimum 59.2 



Greatest daily range 36, Uth 



Least daily range 13,28th 



Degree-days of heating load for month. . 24.5 

 Degree-days cumulative for season. . . 5575.5 



Precipitation, in inches 



Precipitation 0.72 



Snow 



Maximum precip. in 24 hrs 0.39, 22nd 



ISumber of days with .01 or more 3 



Wind, in miles 



Total movement 3632 



Greatest daily movement 235, 26th 



Least daily movement 73, 29th 



Mean hourly velocity 5.5 



Maximum velocity 32, 26th 



Wind, direction 



Prevailing direction sw 



North, days 1 



Northeast, days 3 



East, days 4 



Southeast, days 



South, days 4 



Southwest, days 12 



West, days 5 



Northwest, days 1 



Weather 



Mean relative humidity, percent 62.6 



Mean cloudiness, percent 39.7 



Number of t lear days 



Number of fair days 21 



Number of cloudy days 9 



Number of hours bright sunshine 179.9 



Percent of possible hours of 



br'ght sunshine 39.3 



Thunder and lightning 20th 



Normal 



30.30 



29.55 



29.95 



0.75 



91.2 

 40.0 



65.7 

 51.3 



Extremes 



358; 



5.0 

 24.6 



wsw 



66.9 



51.1 



10 



12 



8 

 257 



54.0 



30.70, 1947 

 29.24, 1902 



I01,191'> 

 34, 1891 



9.68, 1922;0.76, 1908 

 17, 1922, 1945; 4, 1908 



4571, 1908; 1409, 1906 

 48, 1939 



71, 1903; 28, 1908 



22, 1908, 1941, 1943, 1, 1927 



23,1912;3, 1941 



22, 1903; 1,1923 



362, 1908;102, 1903 



]\ote — The first column in the above summarj' 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. 



