MONTHLY SUMMARY 



March, 1949 



Barometer, in inches 

 (Readings reduced to sea level) 



Maxinmm 30.64, 20th 



Minimum 29.31. 1st 



Mean semi-daily 29.94 



Range 1.34 



Air Temperature, in degrees F. 



Highest 75. 26th 



Lowest 2, 20th 



Mean 38.2 



Range 73 



Highest mean daily 64, 27th 



Lowest mean daily 19.5, 20th 



Mean maximum 48.3 



Mean minimum 28.5 



Greatest daily range 35, 20th, 21st 



Least daily range 4, 12th 



Degree-days of heating load for month 831 

 Degree-days cumulative for season. ...4917 



Precipitation, in inches 



Precipitation 1.03 



Snow 10.5 



Maximum precip. in 24 hrs 71 



Number of days with .01 or more 4 



Wind in miles 



Total movement 5768 



Greatest daily movement 408. 1st 



Least daily movement 50, 20th 



Mean hourly velocity 7.P 



Maximum velocity 40, 12th 



Wind, direction 



Prevailing direction NW 



North, days 5 



Northeast, days 6 



East, days 



Southeast, days 1 



South, days ; 5 



Southwest, daj's 3 



West, days 4 



Northwest, days 7 



Weather 



Mean relative humidity, percent 67 



.Mean cloudiness, percent 57 



Number of clear days 13 



Number of fair days 9 



Number of cloudy days !' 



Number of hours bright sunshine ....174.1 

 Percent of possible hours of 



bright sunshine 47 



Thunder and lightning — 



Normal 



30.57 



29.24 



30.04 



1.34 



63.8 



6.1 



34.4 



57.6 



43.2 



25.4 



3 70 



7.47 



11 



5944 



64.2 



51.8 



11 



10 



10 



199 



53.6 



Extremes 



31.05, 1943 

 28.47, 1914 



2.10, 1914; 0.85, 1915 



85, 1929 

 -7.5, 1906 



7.89, 1942: 0.12, 1915 

 27, 1899; 0, 1921 



17,1890,1913,1936; 3,1915 



8182, 1896; 3006, 1905 



31.2 48, 1932, 1.939, 1941, 1942 



WNW 



08,1901; 27, 1915 



22, 1924; 3, 1901 



17, 1900; 1. 1943 



21, 1901; 1, 1915 



292, 1924; 93, 1901 



Note — The first column in the above summary gives observations made 

 during the month. The second column gives the averages based on observa- 

 tions 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 1947. 



