Settled science: We allegedly know that the world is now maybe a degree warmer than it was a century ago, but two official sources differ by 4.78 degrees regarding the temperature in Tennessee last month

USCRN vs NOAA September 2012 « sunshine hours

16 states show USCRN stations warmer than NOAA (bold) and 32 show NOAA warmer than USCRN.
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Ignoring area weighting, the NOAA temperature averaged 0.80F warmer than USCRN.