ANNUAL SUMMARY 



Annual, 1947 



(Readings reduced to sea level) 

 Barometer, in inches 



Maximum 30.89. Jan. 1 



Minimum 28.63. Mar. 3 



Mean semi-daily 30.002 



Range 2.26 



Air Temperature, in degrees F. 



Highest 95, Au.tr. 14 15. 25 



Lowest -1, )an. 10 



Mean 48.4 



Range _ '^6 



Highest mean daih- 84.5, Aug. 14 



Lowest mean daily. . . . 12.5, Jan. 10, Feb. 21 



Mean maximum 58.8 



Mean minimum 38.1 



Greatest daily range 44, Oct. 25 



Least daily range 2. I^ec. 23 



Precipitation, in inches 



Precipitation 38.32 



Snow 43.75 



Maximum precip. in 24 hrs 2.46, Nov. 12 



Number of day with .01 or more 107 



Wind, in miles 



Total movement 51530 



Greatest dai'y movement 4^0 Dec. 9 



Least daily movement 7. Jan. 15 



Mean hourly velocity 5.9 



Maximum velocity 45. Mar. 3 



Wind, direction 



Prevailing direction WNW 



North, days 62 



Northeast, days 17 



East, days 7 



Southeast, days 50 



South, days 61 



Southwest, days 30 



West, days 47 



Northwest, days 91 



Weather 



Mean relative humidity, percent 68.3 



Mean cloudiness, percent 51.1 



Number of clear days 136 



Number of fair days 109 



Number of cloudy days 120 



Number of hours bright sunshine 2385 



Percent of possible hours of 



bright sunshine 53.5 



Last snow Apr. 21 



First snow Dec .3 



Last frost May 15 



First frost Sept. 27 



30.81 

 28.95 

 30.01 



1.85 



95.7 

 -12.2 



47.4 

 107.8 



57.8 

 36.5 



43.70 



47.78 



124 



;2.223 



5.8 

 39.: 



W 



67.6 

 51.7 

 116 

 123 

 126 

 2.353 



52.8 

 April 15 

 Nov. 6 

 Mav 14 

 Sept. 21 



Extremes 



31.05. 1920. 1943 

 28.41, 1938 



2.47, 1938; 1.38. 1933 



104, 1911 



-26, 1904 



49.x. 1921; 44. 1904 



59.00, 193S; 30.68 1908 

 89 00. LSO.l; 24.50. 1919 



14^, 1945; 9(,. 1924 



63.571, 1908; 36,257. 1894 



80, 1938 



60, '9S, '01, "02; 41. '08, '24 

 217. 1941; 59. 1927 

 182, 1912; 64, 1936 



179. '01, '02; 71, 1910, 1941 

 3038. 1941; 1864. 1902 



Mar.14,'10; Mav 11 '07, '45 

 Oct. 10, "25; Dec. 13, '41 

 Apr. 14, '43; June 8. '32 



Aue. 22.'94.'95; Oct. 13. '09 



