BBC's Esmond Holden wades through another wet Glastonbury festival

Overnight temperatures fell below 50F (10C) and more bad weather is forecast.

WRVS workers were called to the 400-acre site at Pilton, Somerset, on Friday night, to distribute the sleeping bags and blankets to families with young children.

Organiser Michael Eavis, whose Worthy Farm home is in the middle of the festival fields, was reported to be considering cleaning out farm buildings to provide shelter for up to 500 children.

Many people were said to be leaving the site on Saturday morning as thunderstorms were reported to be heading for the area.

Last year's event turned into a huge mudbath after days of downpours hit the Somerset countryside.

There has been a run on wellington boots and waterproofs from the 90,000 strong crowd at Europe's largest music festival in Somerset.

BBC correspondent Clinton Rogers on the Glasto mudbath

An estimate at 2300 (2200 GMT) on Friday by the Glastonbury Website put the mud at "knee level, for the not very tall".

But the weather has not dampened the spirits of the crowd. Festival-goers cheered on Friday night as two women braved the rain and skinny-dipped in the mud.

Glastonbury is obscured by clouds on the forecaster's map

The cheeky pair were captured by TV cameras and beamed on to giant video screens.

The streakers were seen walking hand in hand after The Lightning Seeds played their No. 1 hit Three Lions '98.

James delayed their performance to avoid a clash with the crucial game by starting their show after the final whistle.

Festival-goers brave the weather

Fans were treated to live transmissions of Friday's matches, including England versus Colombia, on a giant TV screen, with more matches to be screened over the weekend.

Mud already covered much of the Somerset farm site on Friday, the first day of the event.

1997: Glastonbury became mud site

Some festival-goers were fully kitted out with heavy duty rainwear.

Psychologist Emma Soane, 29, from London, who was attending her sixth event and decked out in industrial-strength waterproof trousers and coat, said: "I've given up trying to look cool at these things.

"I don't care what I look like as long as I'm not wet."

But Kingston College student Aidan Larkin said he did not care about the weather.

Aidan, 19, wearing a skinny Tank Girl T-shirt, tight black jeans and full eye make-up, said: "We've got an umbrella and a plastic bag to sit on, so we'll be all right. If it gets any worse, tough."

Blur headline on Saturday

The 1998 event has been sold out, despite an £83 entrance fee and still vivid memories of the torrential rain last year that turned the site into a vast mud bath.

After complaints about primitive conditions last year on the sprawling site, organisers have upgraded roads and installed 50 hot showers.

Some toilets even have music piped from the main stage. But even improved drainage could not stop the mud growing ever deeper.

Bands on Saturday include contemporary favourites such as Blur. But older fans can take in not only old folk hero Bob Dylan but 70-year-old crooner Tony Bennett over the weekend.

Avon and Somerset police have made 95 arrests for drug offences since the festival opened on Wednesday. Drugs seized included cannabis, amphetamines and crack cocaine.

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