U.S. also saw 4 more billion-dollar disasters since May.
Despite being the start of meteorological autumn, September felt more like a summer swelter across much of the contiguous United States. The month was also drier than normal, but 2019 continued its soggy stretch with the wettest January through September period (YTD) ever recorded.

From Environmental News Network

https://www.enn.com/articles/60145-september-2019-tied-as-2nd-hottest-on-record-for-u-s