It's simply an average. If you got 4000 bushel of corn from 100 acres, you'd be getting an average of 40 bushel per acre. (4000/100=40). An acre is measure of area (of land), yield is simply the amount of something (crops) that is produced. Yield could be measured in whatever measurment is approprate for the crop: weight, volume, etc.
The highest monthly average temperature in Spartanburg for August is 80 degrees. The lowest monthly average temperature in Spartanburg for January is 44 degrees. The most monthly precipitation in Spartanburg occurs in December with 4.8 inches. The air quality index in Spartanburg is 19% better than the national average. The pollution index in Spartanburg is 52% worse than the national average.
1 March 18, 1963. 2  The temperature reaches 90 degrees at the Charleston Airport, which ties it for the hottest in the month of March. 3  March 18, 2013. 4  A line of severe thunderstorms impacted much of southern SC and southeast GA, with numerous reports of trees down and hail as large as quarters in a few spots.