MONTHLY SUMMARY 



April, 1944 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum ._._ 30.41, 22nd, 23rd 



Minimum 29.37, 12th 



Mean semi-daily 29.996 



Range 104 



Air Temperature, in degrees F. 



Highest 74, 30th 



Lowest 23, 4th 



Mean 42.9 



Range _ 51 



Highest mean daily 56, 30th 



Lowest mean daily ^31.5, 4th 



Mean maximum 53.1 



Mean minimum _ 32.6 



Greatest daily range 41, 20th 



Least daily range 5, 12th 



Precipitation, in inches 



Precipitation 3.66 



Snow ^ 



Maximum precipitation in 24 hrs. .1.23, 24th 

 Number of days with .01 or more 11 



Wind, in miles 



Total movement 4306 



Greatest daily movement -364, 13th 



Least daily movement Z2, 8th 



Mean hourly velocity 6.0 



Maximum velocity 39, 13th 



Wind, direction 



Prevailing direction WNW 



North, days 1 



Northeast, days ___0 



East, days 1 



Southeast, days 1 



South, days _.. ...1 



Southwest, days — 1 



West, days 12 



Northwest, days ._._13 



Weather 



Mean relative humidity, percent i61.7 



Mean cloudiness, percent - 58 



Number of clear days „_..:... 13 



Number of fair days 6 



Number of cloudy days 11 



Number hours bright sunshine 220 



Percent of possible hours of bright 



sunshine 54.7 



Thunder and lightning 16th, 24th 



Last snow March 29 



Normal 



30.48 



29.38 



29.99 



1.11 



79.4 

 22.0 



45.7 

 57.4 



56.8 

 34.8 



3.35 

 2.17 



11 



5404 



7.5 

 31.4 



WNW 



61.6 



51.8 



11 



9 



10 



220 



54.7 



Apr. 15 



Extremes 



30.71. 1911 

 28.98, 1943 



1.52, 1930; .72, 1919 



90, 1941 



8.5, 1923 



52, 1921 ; 41, 1943 



6.89, 1929; .55, 1941 

 11, 1891; 0, 1910, 1934 



18, 1909; 3, 1892 



8208, 1908; 3853, 1917 



40, 1935, 1938, 1940 



75, 1901 ; 34, 1925, 1927 



23, 1941; 3, 1898, 1902 



18, 1915; 2, 1894, 1901 



22, 1901; 1, 1941 



329, 1941 ; 103, 1901 



Mar. 14, 1910; May 11, 1907 



Note — The first column in the above summary 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 1943. 



