If your wall barometer is almost off the scale (high) it is indicating correctly. For the past twenty-four hours the barometric pressure has been rising rapidly, to the highest since April 2015, with a reading of 1037.0 at 08.00. With little wind, maximum gust overnight was 10mph, daytime 7mph, the stagnant air is trapped below the anticyclone. For long periods the air has been still. As a result thick fog has formed with visibility down to 100m this morning.
Both maximum (9.4C) and minimum (5.3C) in the past twenty-four hours are down again but both still well above the mean for December.
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