The lack of rain is causing a sharp decrease in marijuana production this year.
State police say they've confiscated nearly 190,000 fewer plants this year than they did last year.
Plus, the ones they have collected yielded only about half the usual number of buds growers sell as intoxicants.
The head of Kentucky's Marijuana Eradication Program says the weather has been the growers' worst nightmare.
Last year the U.S. Drug Enforcement Administration ranked Kentucky second behind California in the number of illegal marijuana plants eradicated.