The average September temperature across the contiguous U.S. was 67.8 degrees F — 3.0 degrees above the 20th-century average — making it the fifth-warmest September in the 127-year climate record.
Some extremes included Oklahoma, which had its ninth-driest September, as well as Pennsylvania and Massachusetts, which saw their seventh- and eighth-wettest Septembers on record respectively, due to the remnants of Hurricane Ida.