354 



NINETEENTH REPORT. 



Table IV. 



U. S. Department of Agriculture, Weather Bureau, 

 Charles F. Marvin, Chief. 



MONTHLY METEOROLOGICAL SUMMARY. 



Lansing, Michigan, September, 1916. 



Q 



» CO 



oo 



SUMMARY. 



1... 



2... 



3... 



4.. . 



5... 



6... 



7. . . 



8... 



9.. , 

 10... 

 11... 

 12.., 

 13... 

 14.. . 

 15.. . 

 16... 

 17... 

 18... 

 19... 

 20... 

 21... 

 22.. . 

 23.. . 

 24... 

 23... 

 26... 

 27... 

 28... 

 29... 

 30... 

 31... 



0.01 











0.10 

 0.03 





 0.10 





















 0.04 













 0.08 













 0.01 



















0.38 

 1.34 

 0.13 











Cloudy 



Clear 



Clear 



Cloudy 



Pt. Cloudy 



Pt. Cloudy 



Cloudy 



Pt. Cloudy 



Clear 



Pt. Cloudy 



Clear 



Clear 



Pt. Cloudy 



Pt. Cloudy 



Pt. Cloudy 



Pt. Cloudy 



Pt. Cloudy 



Pt. Cloudy 



Pt. Cloudy 



Clear 



Pt. Cloudy 



Cloudy 



Pt. Cloudy 



Pt. Cloudy 



Clear 



Cloudy 



Cloudy 



Cloudy 



Pt. Cloudy 



Clear 



3 



98 

 100 

 27 

 61 

 77 

 42 

 68 

 98 

 66 

 98 

 87 

 67 

 45 

 30 

 58 

 66 

 81 

 80 

 99 

 36 

 21 

 33 

 61 

 100 

 

 

 30 

 39 

 96 



Mean highest temp 72 . 3 



Mean lowest temp 48.4 



Mean temp, for month 60.2 



Total precip. for month 2.17 



Weather. 



Number days clear 



Partly cloudy 



Cloudy 



With 0.01 or more of precipitation. 



8 

 15 



7 

 10 



Sunshine. 



Number hours sunshine 222.1 



Possible hours sunshine 374.8 



Percentage of possible 59 



B.vrometer. 



Mean 30.02 inches 



Highest 30.37 inches, on 3rd 



Lowest 29.62 inches, on 27th 



I 



1863 

 1864 

 1865 

 1866 

 1867 

 1868 

 1869 

 1870 

 1871 

 1872 

 1873 

 1874 

 1875 

 1876 

 1877 

 1878 

 1879 

 1880 

 1881 

 1882 

 1883 

 1884 

 1885 

 1886 

 1887 

 1888 

 1889 

 1890 

 1891 

 1892 

 1893 

 1894 

 1895 

 1896 

 1897 

 1898 

 1899 

 1900 



1901 J 



1902 I 

 1903 

 1904 

 1905 

 1906 

 1907 I 

 1908 

 1909 

 1910 

 1911 

 1912 

 1913 

 1914 

 1915 

 1916 



59.6 



67.7 



55.8 



56.6 



58.8 



63.5 



63.7 



59.1 



62.0 



67.4 



62.8 



58.5 



56.3 



61.3 



63.2 



56.2 



55.8 



69.7 



59.9 



56.4 



65.1 



58.9 



62.1 



58.9 



57.8 



61.2 



57.7 



65.1 



60.8 



58.4 



63.7 



66.6 



57.6 



62.9 



63.3 



57.0 



63.2 



61.7 



58.7 



61.0 



62.0 



63.8 



67.5 



61.8 



66.4 



60.4 



60.2 



61.5 



62.7 



61.0 



60.3 



63.2 



60.2 



0.89 

 3.53 

 4.79 



80 

 42 

 95 

 43 

 85 

 79 



5.21 

 3.50 

 1.27 

 2.89 

 3.65 

 1.38 

 3.41 

 3.19 

 3.10 

 2.91 

 0.67 

 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 



Temperature. 



Highest. 88°, on 7th. 



Lowest, 30°, on 19th. 



(ireatest daily range, 39°, 

 on 19th. 



Least daily range, 12°, on 

 27th. 



Normal for month, 61.6°. 



Excess or deficiency this 

 month, — 1.4°. 



.Vccumulated excess or de- 

 ficiency since Jan. 1st, 



-89' 



average daily. 



I same period, — 0.3°. 

 Highest in 31 years, 99° ; 

 lowest, 21°. 



Precipitation. 

 (in inches). 



Total amount, 2.17; nor- 

 mal, 2.62; excess or de- 

 ficiency this month, 

 — 0.45; since Jan. 1st., 

 —1.27. 



Greatest amount in any 24 

 hour period, 1.34, on 27th. 



Total snowfall, 0.0 in. 



Wind. 



Prevailing Dir., SW. 



Total movement, 3.916 



miles ; average hourly 



velocity, 5.4 miles. 

 Maximum velocity, 20, from 



the SW, on 27th. 



Dates of — 



Auroras 



Dense fog 



Hail 



Thunderstorms, 4, 7, 21, 26, 



27. 

 Halos: solar, 10, 19. 



lunar 



Frost: killing 19 



heavy 18 



light 



Department of Botany, Michigan Agricultural College. 



