The latest NOAA monthly summary for the US for January through September 2017 shows for the continental US, it was the third warmest on record, behind 2012 and 2016. The record for September put it in the top third of all Septembers since 1895. The year to date precipitation was the wettest on record, beating out 1979. For September it was in the driest third of all Septembers. You can read more and see additional maps at https://www.ncei.noaa.gov/news/national-climate-201709.