Nine US weather stations set heat records on Nov. 6, led by 91 degrees in Port Mansfield

Port Mansfield, Texas, reached 91 degrees on Nov. 6, four degrees above the 87 set there in 2005. That was the highest reading among nine U.S. stations that broke daily heat records on the date, a list that stretches from the Texas coast to a New Hampshire town near the Maine line. Seven of the nine are in the Southeast and southern Appalachians.

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A daily record only counts against the same calendar date in a station’s own history, so a 65-degree day on a Tennessee ridge can sit in the same table as a 91-degree day on the Gulf coast. Every record below came with a period of record between 32 and 56 years, so none of them is an all-time mark, and several would not have counted as records at all in a station with a longer history.

Nine stations from Texas to New Hampshire

The tally comes from WeatherOnThisDay’s Nov. 6 records page, which reports 10 records for the day, nine of them heat and one cold, built on NOAA’s daily station data. In order of the new reading: Port Mansfield, Texas, 91 degrees (87 in 2005, 50 years of record); Daytona Beach International Airport, Florida, 87 (86 in 2018, 56 years); Jacksonville Beach, Florida, 84 (83 in 2003, 52 years); Clinton 2 NE, North Carolina, 83 (82 in 2003, 55 years); Lafayette 2W, Alabama, 83 (82 in 2024, 52 years); Bamberg, South Carolina, 82 (81 in 1994, 53 years); Gadsden, Alabama, 80 (79 in 2005, 51 years); Berlin, New Hampshire, 76 (72 in 2022, 54 years); and Newfound Gap, Tennessee, 65 (64 in 2025, 32 years). States were matched to stations using the source’s own state summary, so the placements of Clinton and Newfound Gap follow that list, and the page flags no ties among the nine.

Margins of one degree and four

Most of the nine won by a single degree. Port Mansfield and Berlin each won by four, and everything else was one. Lafayette beat a mark set as recently as 2024, and Newfound Gap beat a 64 set only in 2025, a reminder that records at short-history stations, Newfound Gap’s being 32 years, are easier to break than those at stations with a century behind them.

Berlin’s 76 is the northern outlier. A New Hampshire reading that high on Nov. 6 beat the 72 from 2022 by four degrees, and the margin is the same as Port Mansfield’s even though the absolute temperatures are 15 degrees apart.

NOAA’s daily station database, the source underneath the page, is maintained by the National Centers for Environmental Information and covers more than 100,000 stations in 180 countries and territories, with record lengths from under a year to more than 175 years. Because roughly 20,000 stations report in any 30-day period, a national tally from it depends on which stations happened to report.

Geographically the list is lopsided. Six stations sit in Florida, Alabama, South Carolina and North Carolina, and Newfound Gap, Tennessee, adds a seventh in the Southeast and southern Appalachians, leaving one station in South Texas and one in northern New England. The Port Mansfield mark of 87 from 2005 had stood for 21 years before Nov. 6.

The previous records were mostly recent ones. Eight of the nine beaten marks were set in 2003 or later: 2003 twice, 2005 twice, then 2018, 2022, 2024 and 2025, with only Bamberg’s 81 from 1994 older. Added together, the nine new records beat the old ones by 15 degrees, an average of about 1.7 degrees per station.

The cold record and the Texas context

One cold record stood against the nine heat ones. Markley Cove, California, hit 33 degrees, below the 35 set in 2017, in a 56-year record. The pairing shows a day that was not uniformly warm across the country, and the heat tally was a southeastern and coastal story more than a national one. For the Rio Grande Valley, the National Weather Service’s Brownsville office listed near to slightly below normal temperatures through Veterans Day as of its Nov. 10 map update, and favored normal to warmer conditions from November 2026 through January 2027. Its Oct. 31 outlook, written by forecasters Andrei Evbuoma, Barry Goldsmith and Rodney Chai, said October was very warm there, in the top five warmest in many locations, with a very strong El Niño in place.

On the night of Nov. 11, a separate Port Mansfield coastal station run by NOAA’s National Data Buoy Center was reporting an air temperature of 68.5 degrees. It is not necessarily the station behind the record, and its reading only illustrates how far the local temperature had fallen from 91 within five days. The Brownsville office’s record event report for Nov. 6 was not readable during research, so the nine-station list rests on the aggregator’s reading of NOAA data. Anyone needing an official confirmation should look for the Weather Service’s own record event reports for Brownsville, Harlingen and McAllen, which the Brownsville page links to but did not display.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.