Hot weather maps show UK to be hit with 20C Indian Summer - 18 warmest counties

The UK could see some unusually warm weather early next month, according to a new weather map. The mercury could hit 20C in the south of Lincolnshire, while several other areas could be in the high teens on October 7, the weather map by forecaster WXCharts.com shows.

Most of the warmest temperatures will likely be in southern areas of England, with Scotland, Wales and Northern Ireland all expected to be cooler. In addition to Lincolnshire, the warmest counties - those predicted to see temperatures of 17C or above - are expected to be Berkshire, Buckinghamshire, Cambridgeshire, Cornwall, East Yorkshire, Essex, Gloucestershire, Hertfordshire, Leicestershire, Norfolk, Northamptonshire, Oxfordshire, Rutland, Somerset, Suffolk, Surrey and Wiltshire.

Wales could see highs of 16C, with Powys likely to be the warmest.

The average temperature for England and Wales in October is between around 7C and 14C, according to the Met Office.

The weather map suggests temperatures in Scotland and Northern Ireland on October 7 will be cooler.

It could hit 15C in Berwickshire in Scotland but other areas are set to be fresher, with most areas predicted to be between 11C and 13C.

While temperatures of 12C are expected across Northern Ireland, the weather map shows.

The Met Office's long range forecast for October 4 - October 13 says: "This period could begin with some very disturbed weather for the British Isles, with a deep low probably passing to the north or northwest of the country.

"This means there is potential for very strong winds and some further heavy rain, especially, but exclusively for more northern areas.

"Into the following week, a broadly westerly type looks most likely, with further weather systems running in from the Atlantic.

"On balance, southern areas stand a better chance of seeing longer drier interludes. However, confidence in the details remains on the low side, owing to ongoing Atlantic tropical cyclone activity.

"Overall, temperatures probably fairly close to average by day and whilst some overnight frost cannot be ruled out, especially later in the period, nothing overly cold is signalled at this stage."