Monday 24th August
On Sunday the temperature recovered considerably, after a few cool days, that saw the thermometer rise to a maximum of 24.5C at 16.14 being 2.9C above average. Under clear skies and totally calm conditions after 22.30, the past night has been very cool with the thermometer sinking to a low of 8.3C at 02.28. This minimum was 3.5C below average and the fourth consecutive below average minimum.

In the early hours of Monday, radiation fog had formed in the River Og valley, the Marlborough Downs and Savernake Forest could be seen above the ribbon of fog. As the temperature dropped significantly the greater moisture in the air around the river condensed that took until 07.15 to evaporate.

The recent high pressure is slowly edging eastwards but will bring us fine, dry weather for today and Tuesday with the breeze strengthening this afternoon and veering into the east. The next couple of days will be warmer as the breeze from the east will contain some warmth from the Continent, coming around the southern edge of the anticyclone, that will by then be centred over Scandinavia.

The low-pressure system, currently off the Iberian coast, will edge closer but not begin to have any major influence on our weather until Wednesday when it will produce a significant change in wind direction, to come from the south or west-southwest, arriving from the Atlantic. This change in wind direction will mean higher humidity after the air stream has crossed the sea, coming in from the Atlantic, bringing with it cloudier conditions. At the moment, the major weather forecasters are giving very different projections as to how such rain might arrive towards the end of the week from the several weather fronts that are forecast to cross the country.

By Thursday the depression will likely be centred over the UK producing unsettled conditions with variable cloud and uncertain amounts of precipitation.