NOAA: September 2019 Tied as 2nd Hottest on Record for U.S.

By  //  October 10, 2019

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An annotated map of the United States showing notable climate and weather events that occurred across the country during September 2019. (NOAA image)

(NOAA) – 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.

The U.S. also experienced four new weather disasters since May, each exceeding $1 billion: Hurricane Dorian, Tropical Storm Imelda, a southern/eastern severe weather outbreak, and flooding of the Arkansas River that impacted Arkansas, Oklahoma and Kansas.

Here are more highlights from NOAA’s latest monthly U.S. Climate Report:

Climate by the numbers
September 2019

The average temperature for September across the contiguous U.S. was 68.5 degrees F (3.7 degrees above the 20th-century average), which ties with 2015 as the second warmest September on record.

After a more mild August, Alaska had an average temperature that ranked third warmest for September. Near-average temperatures were present across much of the West and in Maine.

The average precipitation for September in the contiguous U.S. was 2.42 inches (0.07 inch below average), which puts the month in the middle third of the 125-year record.

Wetter-than-normal conditions were found from the West Coast to the northern Plains and Great Lakes. North Dakota had its wettest September on record.

Record dry conditions were present across Mississippi, Alabama, Georgia, Florida, Kentucky and West Virginia.

Year to date: January through September

The average U.S. temperature for the year to date (January through September) was 55.8 degrees F, 0.8 degrees above the 20th-century average, which ranked  in the warmest third of the record.

The contiguous U.S. had its wettest year to date on record at 27.96 inches. Above- to much-above-average precipitation stretched from coast to coast, with record rainfall across South Dakota and Michigan.

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