Tuesday brought another hot day with 9.42 hours of strong sunshine and a maximum of 27.7C at 15.34, almost 3C down on Monday’s peak but still 5.4C above average.
No day in July has seen the maximum fall below the 34-year July average of 22.25C.
My station is positioned on the outskirts of Marlborough, well up the garden and the furtherest away from any building and paved area. Therefore any instrument in the town closer to buildings of next to paved/tarmac areas that soak up the heat will give a higher daily reading. Also, although thermometers might be in the shade, professional instruments are all shaded from solar radiation to get as accurate an ambient temperature as possible and as close to Meteorological standards that can be obtained.
Overnight the minimum of 13.8C was recorded at 05.54, just after the sun rose. A short while later variable cloud obscured the sun but well before 8am the sun was coming through strongly and by 08.00 the temperature had risen to 18.0C.
Update at 17.18: maximum temperature of 27.8C reached at 17.15 with humidity exceptionally low currently reading just 33% in very light south westerly air of 5mph.