https://weather.com/storms/winter/news/coldest-day-year-average-map-noaa-20141112the western half of the Lower 48 typically reaches its climatological coldest day in December, whereas most eastern stations reach their minimum in January. In addition, areas with higher snowfall Normals, such as the Northeast and high-altitude regions in the West, tend to reach their climatological coldest day much later, which is likely because of the increased reflection of solar radiation at the Earth’s surface due to the presence of snow cover.
You mean like so?If record highs got less and less common as time went on, and n got larger, you could be confident that they were randomly occurring. ("Shuffling the time sequence" is an effective method of burying that bit of highly relevant info.) Get back to us after you've had a look at the actual distribution of record highs over time.
Before we proceed with addressing your claim, I'm curious, are you aware that your argument from authority is based on an authority who is as biased against science as it is possible to be and who has a questionable history of publishing papers?If you look at NASA's data here: https://en.wikipedia.org/wiki/File:Global_Temperature_Anomaly.svg
And then compare the 1979 to present data to the MGT data from the weather satellite scan: http://www.drroyspencer.com/wp-content/uploads/UAH_LT_1979_thru_May_2018_v6.jpg you lose all faith in anything NASA has to say. NASA supplies data to most everyone and garbage in = garbage out.