September 22, 2026
Meteorologist Chris Martz examined NOAA’s data and found that the reported record was driven largely by unusually warm overnight minimum temperatures rather than record daytime highs.
By average daytime maximum temperature, 2026 does not rank first. The legendary Dust Bowl summer of 1936 remains the hottest.
Martz also points out something largely absent from the news coverage. Although the national average narrowly set a record, only seven of NOAA’s 344 climate divisions recorded their warmest summer on record in 2026.
Those were concentrated almost entirely in the Desert Southwest. During the infamous summer of 1936, more than seven times as many climate divisions experienced record summer heat.
There is another issue that deserves far more attention.
NOAA’s long-term climate record is not based solely on raw thermometer observations. It relies on a homogenized dataset in which temperatures are adjusted to account for changes in station location, observation time, instrumentation, and other factors.
Those adjustments are a legitimate part of climate analysis, but they are also legitimate subjects of scientific debate.
Martz notes that some of NOAA’s adjustments are larger than the 0.4°F margin by which 2026 supposedly surpassed 1936. He also raises concerns that NOAA’s pairwise homogenization algorithm may not fully remove gradual urban heat island influences and could inadvertently spread urban warming into nearby rural stations.
The United States Climate Reference Network is widely regarded as the nation’s gold standard for surface temperature measurement. Unlike many older weather stations, USCRN sites were specifically built in carefully selected rural locations to avoid contamination from expanding cities, parking lots, buildings, and other artificial heat sources.
The USCRN temperature data record tells a noticeably different story. It shows one exceptionally warm month during March 2026, but the summer months themselves do not stand out as extraordinary compared with the network’s roughly 20-year history.
If the United States truly experienced an unprecedented summer across its highest-quality climate observing network, one might reasonably expect that signal to appear there as well.
But it doesn’t. That discrepancy deserves investigation rather than silence from the media.
Posted by: Timothy Birdnow at
08:30 AM
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