MONTHLY SUMMARY 



January, 1945 



Barometer, in inches 



(Readings reduced to sea level) 



Maximum 30.44, 3rd 



Minimum 28.98, 1st 



Mean semi-daily _, 29.998 



Range _, 1.46 



Air Temperature, in degrees F. 



Highest ._..__ __ 55, 1st 



Lowest -10. 25th 



Mean . : 17.8 



Range .. . _ 65 



Highest mean daily _.: 42.5. 1st 



Lowest mean daily -1.0, 25th 



Mean maximum 28.0 



Mean minimum . . 1 j 



Greatest daily range 38, 12th, 20th 



Least daily range .. 6, 16th 



Precipitation, in inches 



Precipitation 3.07 



Snow ._. 23.50 



Maximum precipitation in 24 hrs. _ 1.05, 1st 

 Numher of days with .01 or more 8 



Wind, in miles 



Total movement 5471 



Greatest daily movement , ZZl , I7th 



Least daily movement ...__ 29, 11th 



Mean hourly velocity . 7.4 



Maximum velocity 45, 24th 



Wind, direction 



Prevailing direction WNW 



North, days 1 



Northeast, days ._ ._ 



East, days '. 



Southeast, days __ __ 4 



South, days 1 



Southwest, days __.._ .._..l 



West, days . H 



Northwest, days 13 



Weather 



Mean relative humidity, percent 62.6 



Mean cloudiness, percent 51.8 



Number of clear days 14 



Number of fair days 1. 10 



Number of cloudy days '. 7 



Number hours bright sunshine 177 



Percent of possible hours of bright 



sunshine 60.2 



Thunder and lightning . 29th 



Normal 



30.70 



29.20 



30.07 



1.50 



51.1 

 -7.1 

 24.2 

 58.2 



3.61 

 13..32 



11 



5055 



6.8 

 32.7 



WNW 



70.1 



55 



9 



9 



13 



137 



46.7 



Extremes 



31.00, 1927 

 28.55, 1913 



2.18, 1913; 0.97. 1896 



66.0, 1932 



-26.0, 1904 



.34.2, 1913; 13.9. 1918 



7.15, 1898; 1.07, 1896 

 17>, 1898, 1923; 1.50, '08 



15, '9.3, '20; 4, 1901 



7770, 1908; 2896, 1895 



47, 19.' 



78. 19.32: .37, 1908 

 20. 1944: 2, 1914 

 18. 1890. 1926; .3, 1916. 1944 

 22. 1923. 1931 ; 4. 1920. 1939 

 214. 1920: 74, 19.32 



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 19.38. The third column gives extremes observed from 1889 to 1944 



