Another private crop forecast predicts a record corn harvest for 2020. Main Street Data forecast the 2020 national corn yield at 178.1 bushels per acre for corn. Despite setbacks from storms and a lack of rain, the forecast still surpasses the last national yield record, set in 2017 at 176.6 bushels per acre. However, Iowa corn yield was reduced further, thanks to derecho damage and a lack of rain. With Iowa and neighboring states reeling from the August 10 derecho, a lack of rain is now worsening yield forecasts for corn. Main Street forecasts Iowa corn loss at 185 million bushels. This puts Iowa’s final yield forecast at 195.7 bushels per acre, compared to the Iowa record of 203 bushels per acre. With no derecho damage and good soil moisture, Indiana forecasts for both corn and beans may hit records, conversely, showing how yield can vary widely between states.