Accuweather.com reports that...
October began extremely dry and unseasonably hot across much of eastern Brazil as well as in Paraguay, but changes are on the way.
The core of drought conditions and heat were felt from eastern Paraguay into the Brazil states from Parana to Mato Grosso and Bahia. Just a short distance to the south, across the state of Rio Grande do Sul, rainfall has been well above average and temperatures close to normal.
So far this month, many locations across eastern Brazil and Paraguay saw little to no rainfall with most areas receiving 10 percent or less of normal precipitation. Going back even further, since the start of the summer season (June), much of this same area has seen less than half of their normal rainfall.