LADBROKES say it is odds-on that 2015 will be declared the wettest on record.

The bookies say there is a 6/5 chance this year goes down in history as the wettest yet and are offering 4/1 that this September will also be a wet record breaker.

Alex Donohue, of Ladbrokes, said: "As every drop of rain falls the odds follow suit, and it's now looking increasingly likely that 2015 will be chalked up in the history books as the wettest year we've ever seen."

Sporadic rainfall and sunny spells were forecast for today and temperatures are expected to warm up towards the weekend - as nights are set to get chillier.

Laura Young, from the Met Office, said: "As with any seasons there is a transitional phase. You don't hit December 1 and it becomes immediately freezing cold. You are more likely to see snow at the end of winter than the beginning.

"Certainly it can be quite settled but it can also be quite volatile in September, it all depends.

"We have had a mixture of wet and windy and very warm and dry. We have had a good mixture which is fairly typical for September."

Weather will warm up on Friday with temperatures hitting around 18C (64F) in the south, with a few showers that will become lighter and less frequent, leaving everywhere dry by the end of the day.

Heading into the weekend, most of the UK except for the western isles will be dry with some sun and patchy cloud, with maximum temperatures remaining at 17/18C in the south and 16C in the north.

Clear skies mean that nights will start to get more chilly as temperatures dip into single figures.

Ms Young said: "There is quite a lot of sunshine around on the weekend, particularly on Saturday.

"It will mainly be staying dry and that will hang around until the middle of next week. That could bring mist and fog overnight."

She said Britain is set to see "warm days and chilly nights because we are going into that autumn weather".