154 STATE BOARD OF AGRICULTURE. 



Monthly Meteorological Summiry, Lansing, Michigan, June, 1920. 



Barometer— Mean, 29.99 inches; highest, 30.34 inches, on 2Gth; lowest, 29.57 inches, on 16tli. 



Temperature— Highest, 93°, on 10th; lowest, 45°, on 6th; greatest daily range, 32°, on 10th; least daily range, 10°, on 2Jst. 

 Normal for month, 67.2°. Excess or deficiency this month, +0.5°. Accumulated excess or deficiency since January 1st, —477°: 

 average daily, same period, —2.6°; highest in 35 years, 99°; lowest, 34°. 



Precipitation (in inches)— Total amount, 4.17; normal, 3.40; excess or deficiency this month, +0.77; since January 1st, 

 — 1.39. Greatest amount in any 24 hour period, 2.19, on 15th and 16th. Total snowfall, 0.0 inches. 



WlhfD — Prevailing direction, south; total movement, 3,205 miles; average hourly velocity, 4.5 miles. Maximum velocity 24, 

 from the northwest, on 11th. 



Dates of— Auroras, 0; hail, 0; thunderstorms, 1, 11, 12, 15, 16. Halos: solar, 20, 28; lunar, 27, 28, 29. Frost: killing, 0; 

 heavy, 0; light, 0. 



DEWEY A. SEELEY, 



Meteorologist. 



