Though September was warmer and drier than average for the U.S, it will long be remembered for the devastating impacts from Hurricanes Irma and Maria, as well as the remnants of Harvey, to southern parts of the U.S. and the Caribbean. September 2017 – The September nationally averaged temperature was 66.3 degrees F, 1.4 degrees above average. Near-record warmth was observed in parts of the Great Lakes and Northeast. The precipitation total for the month was 2.22 inches, 0.27 of an inch below average, ranking among the driest one-third in 123-years of record keeping. The year to date – The year to date (January–September) average temperature for the contiguous U.S. was 57.7 degrees F, 2.7 degrees above average, the third warmest on record. Above-average temperatures spanned the nation for the first nine months of the year. The year to date precipitation was 26.36 inches, 3.16 inches above average, the wettest on record for this period.
From NOAA Photo John Vlahakis