METEOROLOGICAL TABLES. 145 



Monthly Meteorological Summary, Lansing, Michigan, September, 1919. 



Date. 



'J 



in. 

 11 



12 



13 



14 



15 



16 



17 



18 



19. 



20. 



21. 



22. 



23. 



24. 



25. 



20 



27. 



28. 



2'J. 



30. 



31. 



Temperature. 



Highest. 



77 

 77 

 81 

 77 

 80 

 88 

 88 

 90 

 80 

 70 

 75 

 71 

 76 

 73 

 80 

 76 

 74 

 70 

 73 

 83 

 73 

 71 

 69 

 69 

 01 

 03 

 78 

 81 

 75 

 52 



Lowest. 



45 



45 

 52 

 53 

 46 

 65 

 66 

 70 

 65 

 60 

 51 

 46 

 42 

 49 

 54 

 49 

 49 

 50 

 01 

 59 

 62 

 54 

 48 

 50 

 39 

 34 

 48 

 52 

 52 

 48 



Mean. 



61 



01 

 66 

 65 

 63 

 76 

 77 

 80 

 76 

 05 

 63 

 58 

 59 

 01 

 07 

 02 

 62 

 63 

 67 

 71 

 68 

 62 

 58 

 60 

 50 

 48 

 63 

 06 

 04 

 50 



Precipita- 

 tion in 

 inches. 













 0.01 



















T. 

 21 

 01 









 01 













 01 

 39 

 43 

 .54 

























 02 

 69 

 29 



Character of 

 day. 



Clear 



Partly Cloudy 

 Partly Cloudy 



Clear 



Partly Cloudy 

 Partly Cloudy 

 Partly Cloudy 

 Partly Cloudy 

 Partly Cloudy 



Cloudy 



Partly Cloudy 



Clear 



Clear 



Cloudy 



Partly Cloudv 

 Partly Cloudy 

 Partly Cloudy 



(Moudy 



Cloudy 



Cloudy 



Cloudv 



Partly Cloudy 

 Partly Cloudy 



Clear 



Partly Cloudy 



-Clear 



Clear 



Cloudy 



Cloudy 



Cloudy 



Percent- 

 age of 

 possible 

 sunshine. 



95 



89 

 00 

 84 

 82 

 72 

 08 

 77 

 50 

 '> 



oi 



99 



100 



7 



74 



77 



85 



27 



3 



41 







67 



84 



100 



93 



100 



100 



92 



09 







Mean highest temperature 75 .4 



Mean lowest temperature 52 . 1 



Mean temperature for month 63 .8 



Total precipitation for month 2.61 



Weather. 



Number days clear 7 



Partly Cloudy 14 



Cloudy 9 



With 0.01 or more of precipitation 16 



Sunshine. 



Number of hours sunsliine 240.3 



Pos.sible hour.s sunshine 374.8 



Percentage of possible 60 



This month since 1863. 



Year. 



1803 

 1804 

 1865 

 1800 

 1867 

 1808 

 1809 

 1870 

 1871 

 1872 

 1873 

 1874 

 1875 

 1876 

 1877 

 1878 

 1879 

 1880 

 1881 

 1882 

 1883 

 1884 

 1885 

 1880 

 1887 

 1888 

 1889 

 1890 

 1891 

 1892 

 1893 

 1894 

 1895 

 1890 

 1897 

 1898 

 1899 

 1900 

 1901 

 1902 

 1903 

 1904 

 1905 

 1900 

 1907 

 1908 

 1909 

 1910 

 1911 

 1912 

 1913 

 1914 

 1915 

 1910 

 1917 

 1918 

 1919 



Mean 

 tempera- 

 ture. 



.59.0 

 07.7 

 55.8 

 50.6 

 58.8 

 63 5 

 03 7 

 59 1 



02 

 67.4 

 62.8 

 58.5 

 56.3 

 61.3 



03 2 

 ."JO 2 

 .55 8 

 69.7 

 59 9 

 56 4 

 05.1 

 58.9 

 02.1 

 58.9 

 57.8 

 01 2 

 57.7 

 05.1 

 00.8 

 .58.4 

 03.7 

 06.0 

 57.0 

 62.9 

 63.3 

 57.0 

 03.2 

 01.7 

 58.7 

 61.0 

 02.0 

 03.8 

 07.5 

 61.8 

 60.4 

 00.4 

 60.2 

 01.5 

 62.7 

 61.0 

 60.3 

 03.2 

 00.4 

 58.6 

 54.2 

 63.8 



Total 

 precipita- 

 tion. 



0.89 

 3.53 

 4.79 

 5.80 

 1.42 

 2 95 



1 43 



2 85 



79 

 5 21 

 3.50 



1 27 

 2.89 

 3.65 

 1.38 



3 41 

 3.19 

 3 10 



2 91 



67 

 2.34 



3 34 

 3.75 

 5.40 

 4.72 

 1.89 

 0.79 



1 67 



1 10 

 2.17 

 1.84 

 2.59 

 0.85 

 6.73 

 0.80 

 3.00 

 2.14 

 0.89 

 1.67 

 5.88 

 2.86 

 2.35 

 3.21 

 0.76 

 4.68 

 0.65 

 1.51 

 2.74 

 5.05 

 3.33 

 1.53 

 2.65 

 6.55 

 2.17 

 4.00 



2 88 

 2 01 



B\ROMETF.R — Mean, 30.02 inches; highest, 30.30 inches, on 30th; lowest, 29.41 inches, on 19th. 



Temper,\ti;rk — Highest, 90°, on 8th; lowest. 34", on 20th; greatest daily range, 34°, on I3th. Least daily range, 4°, on .30th. 

 Normal for month, 61.0°; e.xcess or deficiency this month, +2.2°; accumulated excess or deficiency since January l.st, -|-490°; 

 average daily, same period, +1.8°; highest in .34 years, 99°; lowest, 21°. 



Prkcipit.^tion (in inches) — Total amount, 2.61; normal, 2.02; excess or deficiency this month, — 0.01; .since January l.st, +0.91. 

 Greatest amount in any 24 hour period, 0.96, on 20th and 21st. Total snowfall, 0.0 inch. 



Wi.^jD — Prevailing direction, southwest; total movement, 3,077 miles; average hourly velocity, 5.1 miles; maximum velocity 

 23, from the south on 19th. 



D.\TEs OP— .Auroras, 19, 23; fog, dense, 0; hail, 0; thunderstorms, 20, 21; 28, 29; halos: solar 2, 6, 20, 28; lunar, 0; frost: killing, 

 0; heavy, 0; light, 13, 20. 



DEWEY A. SEELEY, 



Meteorologist. 



19 



