Tuesday 9th September
Monday was a pleasant early autumn day with the sun gaining strength in the early afternoon resulting in a maximum of 20.5C at 14.35 being 1.5C above average. A clear sky and lack of wind overnight produced a very chilly night that saw the thermometer drop very low reaching a minimum of 5.7C at 03.43. This was 3.0C below average and the coldest night since 23rd May.

We narrowly missed very heavy rain and thunderstorms on Monday that ran in a southeasterly direction a few miles to the west of our region, mid-afternoon. I got caught up in the first downpour.

During the low temperature and calm conditions, the anemometer fell stationary at 19.15 Monday evening, meant radiation fog formed in the early hours of Tuesday. It was thin in the River Og valley at first but thick over the River Kennet valley that slow drifted in from the east after sunrise, which was hidden behind the fog. The fog had all but disappeared in the River Og valley by 07.30 and just before 08.00 had virtually cleared in the River Kennet Valley and over Savernake Forest.

Today, Tuesday, the cloud from a warm front is just to the west of our area that will slowly move eastwards bringing cloudy conditions this afternoon and likely rain this evening.

The recent high pressure will slowly fall today as we come under the influence of low pressure in the Atlantic. In fact there are four areas of low pressure to the west of the UK that will edge closer over the next twenty-four hours that will by Wednesday bring bands of more heavy rain. This significant change in weather conditions will see the wind back into the south today before veering into the southwest later tomorrow and for the following few days.