202 



STATE BOARD OF AGRICULTURE. 



Monthly Meteorological Summary, Lansing, Micfiigan, April, 1917. 



Date. 



3. 

 4. 

 5. 



6. 

 7. 



i<. 



9. 



10. 



11. 

 12. 

 13. 

 14. 

 15. 



16. 

 17. 

 IS. 

 19. 

 20. 



21. 

 22. 

 23. 



24. 

 25. 



20. 



27. 

 2S. 

 29. 

 30. 



Temperature. 



Mean. 



43 

 38 

 40 

 48 

 38 



37 

 35 

 32 

 32 

 38 



52 

 36 

 32 

 28 

 30 



36 

 48 

 56 

 64 

 63 



48 

 52 

 48 

 44 

 40 



37 

 42 

 42 

 45 



48 



Precipita- 

 tion, in 

 inches. 



0.26 

 0.15 

 

 0.22 

 1,58 



0.05 

 

 

 

 





 

 

 

 





 



0.67 

 1.01 

 0.41 





 0.36 

 0.16 





 0.42 



0.02 











0.05 



0.23 



Character of 

 day. 



Cloudy 



Cloudy 



Partly cloudy . 



Cloudy 



Cloudy 



Cloudy 



Partly cloudy. 

 Partly cloudy . 



Clear 



Clear 



Partly cloudy . 



Cloudy 



Clear 



Cloudy 



Cloudy 



Partly cloudy . 



Cloudy 



Cloudy 



Cloudy 



Partly cloudy . 



Partly cloudy . 



Clear 



Cloudy 



Partly cloudy . 

 Cloudy 



Cloudy 



Partly cloudy . 

 Partly cloudy. 



Cloudy 



Cloudy 



Percent^ 



age of 



possible 



sun-shine. 





 30 

 67 

 52 







23 



65 



98 



100 



100 



79 

 14 

 98 

 11 

 1 



75 

 17 

 49 

 12 

 37 



50 

 99 

 68 

 91 

 



1 



68 



61 







11 



Mean highest temperature.. . . . 



Mean lowest temperature 



Mean temperature for month. 

 Total precipitation for month. 



Weather 



Number days clear 



Partly cloudy 



Cloudy 



With 0.01 or more of precipitation . 



Sunshine 



Number hours sunshine. 

 Possible hours sunshine. 

 Percentage of possible . . , 



This month since 1S63. 



Year. 



1863 

 1864 

 1865 

 1866 

 1867 

 1868 

 1869 

 1870 

 1871 

 1872 

 1873 

 1874 

 1875 

 1876 

 1877 

 1878 

 1879 

 1880 

 1881 

 1882 

 1883 

 1884 

 1S85 

 1886 

 1887 

 1888 

 1889 

 1890 

 1891 

 1892 

 1893 

 1894 

 1895 

 1896 

 1897 

 1898 

 1899 

 1900 

 1901 

 1902 

 1903 

 1904 

 1905 

 1906 

 1907 

 1908 

 1909 

 1910 

 1911 

 1912 

 1913 

 1914 

 1915 

 1916 

 1917 



Mean 

 tempera- 

 ture. 



45.9 



47.4 



48.9 



48.2 



43.7 



45.7 



50.4 



49.8 



47.4 



43.2 



36.9 



41.1 



44.2 



46.2 



50.6 



44.8 



45.9 



45.6 



44.7 



43.5 



43 7 



43.6 



50 2 



45.4 



44.0 



46.6 



47 



47 



44 



43 



48 



48 



52 



44 



43 



49 



47 



46, 



44.0 



43.0 



39.4 



44.6 



46.6 



37.8 



44.6 



42.8 



49.2 



44.3 



45.6 



45.9 



44.7 



51.6 



45.7 



42.4 



Total 

 precipita- 

 tion. 



3.80 

 2.32 

 1.40 

 2.19 

 1.83 

 3.42 

 2.02 

 2.97 

 1.26 

 3.88 

 1.67 

 0.61 

 2.08 



4.14 

 3.76 

 1.25 

 7.06 

 1.73 

 1.88 

 1.90 

 1.95 

 2.47 

 1.99 

 0.90 

 1.15 

 2.02 

 3.20 

 1.74 

 2.04 

 4.81 

 2.76 

 0.67 

 2.77 

 2.74 

 2.12 

 1.23 

 2.00 

 2.16 

 1.70 

 4.40 

 0.50 

 1.49 

 2.43 



SI 

 15 



96 



48 



11 



12 



10 



90 



1.00 



1.91 



5.59 



Barometek — Mean, 30.00 inches; highest, 30.37 inches, on 4th; lowest, 29.36 inches, on 30th. 



Temperature— Highest, 76°, on 20th; lowest, 21°, on 9th; greatest daily range, 31°, on 18th; least daily range, 6°, on 26th; 

 normal for month, 45.6°; excess or deficiency tnis month, —3.2°; accumulated excess or deficiency since January 1st, —249°; 

 average daily, same period, —2.1°; highest in 32 years, 88°; lowest, 10°. 



Precipitation (in inches)— Total amount, 5.59; normal, 2.54; excess or deficiency this month, -f-3.05; since January 1st, 

 — 1.73; greatest amount in any 24 hour period, 1.73, on 4th and 5th; total snowfall, 1.3 inches. 



Wind— Prevailing direction, north; total movement, 5,436 miles; average hourly velocity, 7.6 miles; maximum velocity, 30; 

 from the northwest, on 18th. 



Dates of— Aurora-s 0; dense fog, 0; hail, 0; sleet, 0; thunderstorms, 18, 19, 20, 30; halos: solar, 4, 7, 10. II, 16, 18, 23, 24,28. 

 lunar, 0; frost: killing, 16, 27, 28. 



DEWEY A. SEELEY, 



Local Forecaster. 



