METEOROLOGICAL TABLES. 



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



Date. 



1 



2 



3 



4 



a 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



31 



Temperature. 



Highest. 



01 

 93 

 91 

 92 

 86 

 80 

 79 

 80 

 91 

 77 

 78 

 84 

 80 

 91 

 83 

 81 

 86 

 89 

 91 

 84 

 87 

 85 

 89 

 87 

 89 

 95 

 93 

 88 

 85 

 84 

 75 



Lowest. 



55 

 61 

 63 

 68 

 62 

 57 

 52 

 48 

 58 

 50 

 42 

 58 

 57 

 68 

 56 

 51 

 55 

 57 

 59 

 63 

 63 

 57 

 56 

 61 

 57 

 72 

 71 

 66 

 58 

 57 

 60 



Mean. 



73 

 77 

 77 

 80 

 74 

 68 

 60 

 64 

 74 

 64 

 60 

 71 

 72 

 80 

 70 

 06 

 70 

 73 

 75 

 74 

 75 

 71 

 72 

 74 

 73 

 84 

 82 

 77 

 72 

 70 

 70 



Precipita- 

 tion in 

 inches. 























04 















O.-) 











51 







13 























06 



00 







T. 











30 



20 



11 







17 



0.06 



Character of 

 day. 



Clear 



Clear 



( 'lear 



( 'lear 



Cloudy 



Clear 



Clear 



Partly Cloudy 

 Partly Cloudy 



Clear 



Clear 



Partly Cloudy 

 Partly Cloudy 



Cloudy 



Partly Cloudy 



Clear 



Clear 



Clear 



Partly Cloudy 



Cloudv 



Partly Cloudy 



Clear 



Partly Cloudy 



Clear 



Partly Cloudy 

 Partly Cloudy 



Clear 



Clear 



Clear 



Cloudv 



Cloudv 



Percent- 

 age of 

 possible 

 sunshine. 



Sunshine. 



100 



100 



100 



97 



54 



88 



100 



80 



66 



97 



100 



56 



77 



49 



67 



!)8 



100 



100 



88 



3 



28 



92 



08 



100 



72 



61 



100 



100 



100 



58 



21 



Mean highest temperature 86 1 



Mean lowest temperature 58 8 



Mean temperature for month 72 4 



Total precipitation for month 1 09 



WE.^TnER. 



Number days clear 16 



Partly cloudy 10 



Cloudy 5 



With 01 or more of p/ecipitation 11 



Number hours sunshine 3C4 3 



Possible hours sunshine 464 9 



Percentage of pos.sible 78 



I 



This month since 1863. 



Year. 



1S63 



1864 

 1885 

 1866 

 1867 

 1868 

 1869 

 1870 

 1871 

 1872 

 1873 

 1S74 

 1S7J 

 1876 

 1877 

 1878 

 1879 

 1S80 

 1881 

 1882 

 1883 

 1884 

 1885 

 1880 

 1887 

 1888 

 1889 

 1890 

 1891 

 1892 

 1893 

 1894 

 1895 

 1796 

 1807 

 1898 

 1809 

 1900 

 1901 

 1902 

 1903 

 1904 

 1005 

 1006 

 1007 

 1908 

 1909 

 1910 

 lOII 

 1912 

 1013 

 1914 

 1915 

 1016 

 1917 

 1918 

 1919 



Mean 

 tempera- 

 ture. 



74 5 

 65 6 

 71 7 

 71.6 



70 4 



71 4 



70 6 



71 9 



70 8 



72 



69 7 



72 5 



71 4 



73 



74 

 68 

 73 1 



67 5 

 08 9 



68 



72 7 

 70.7 



75 5 



70 5 

 70 2 



71 



05 

 70 

 71 

 73 



Total 

 precipita- 

 tion. 



1 25 

 3 91 



19 



4 

 1 78 

 1 11 

 5 77 



02 

 10 

 35 

 12 

 56 

 42 

 10 

 25 

 96 

 19 

 6 27 



1 81 



2 32 

 11 27 



2 60 

 2 52 



65 



1 50 



2 40 



3 41 



92 



1 88 



2 00 

 1 86 



86 

 1.47 

 6.73 

 8 49 



1 34 

 2.11 



4 15 



5 08 

 7.13 



3 79 

 1.97 

 5.7S 

 2.23 



4 30 



1 03 



2 50 

 1.53 

 1.65 



5 06 

 2.85 

 1.65 

 5.17 

 09 



3 06 

 1.96 

 1.69 



Barometer— Me^n. 29.99 inches; highest. "0 27 inches, on Ist; lowert, 29.74 inche^i. on lOih. 



Temperature— Highest, 95°, on 26th; lowest, 42°, on 11th; greatest daily range, 30°, on 1st; least daily range, 9° on 31st; 

 normal for month, 70.9°; excess or deficiency this month, +1.5°; accumulated excess or deficiency since January 1st, +463°; 

 average daily, same period, +2.2°; highest in 34 years, 102°, lowest, 37°. 



Precipitation — (In inches)— Total amount, 1.09; normal, 3.22; excess or deficiency this month, —1.53; since January 1st, 

 — 0.48. Greatest amount in any 24 hour period, 0.51, on 12th. Total snowfall, 0.0 in. 



Wind — Prevaihng (iirection, southwest. Total movement, 3,292 miles; average hourly velocity, 4.4 miles. Maximum velocity 

 26, from the northwest, on 9th. 



Dates of— Auroras, 22; fog, dense, 0; hail, 26; thunderstorms, 5, 9, 12, 14, 20, 21, 26, 27, 28. Halos: solar 14, 25, 29; lunar, 0. 

 Frost: killing, 0; heavy, 0; light, 11. 



DEWEY A. SEELEY, 

 Meteorologist. 



