September 2026 was an abnormally warm one, ending up the 4th warmest September on record for Denver (records began in 1872). Precipitation came in above normal at the official reporting station at 2.23" (normal is 1.35"), while below normal precipitation was aboved in the northwest portions of metro Denver, and much above normal precipitation fell in the southeast Denver suburbs. No snow fell in the month of September for the 6th straight year.