The modest change in wind direction on Saturday, coming from the east and east-southeast, meant the air stream had travelled from the Continent rather than over the cool, damp North Sea. As a result the thermometer rose to a maximum of 22.1C at 16.5 being 4.8C above average making it the warmest day since the 2nd. Not only was the air warmer but dryer as the humidity dropped to a low of 29.7% at 16.10, with of course the UK land also being very dry. The overnight minimum of 7.4C, logged at 05.21, at the sunrise time of 05.22 for Marlborough, was the first above average low since the 3rd being plus 0.4C.
The start to Sunday revealed welcome sunshine that was at times a little muted as advance cloud from the depression over the Bay of Biscay is beginning to influence our weather. The centre of the low pressure system is over the Brest peninsula and at 07.30 was already producing numerous thunderstorms over The Isles of Scilly and the Cherbourg peninsula. The big question is how far will the thicker cloud and any possible thunderstorms migrate northwards. Rain has been falling over Cornwall for the past few hours and was edging into west Devon at 08.00. The barometric pressure has fallen another 8mb since yesterday as the depression moved a little closer.
The track of this depression is likely to be centred over the Bay of Biscay today and tomorrow before it is forecast to decay and slip back into the Atlantic as high pressure is likely to build back over the UK from the north, possibly on Tuesday. Monday is likely to come under the influence of the depression with more cloud and possible precipitation, but amounts uncertain at this time.