Glastonbury 2014 weather: After thunderstorm stopped the music, revellers warned of more lightning and torrential rain expected on Saturday

The sun is expected to come back out on Sunday

Lightning in the sky over the Pyramid Stage shortly before it had to be powered down for safety reasons (PA)

Glastonbury will be hit by more storms and torrential rain on Saturday as Metallica and the Pixies take the stage.

The festival is expected to be the, wettest since 2007 when parts of the site were submerged under several feet of water and some cars took nine hours to leave on muddy roads.

The worst weather is expected at around 1pm, according to the Met Office, but heavy downpours and thundery showers could appear at any time through the day.

There will be sunny spells amid the rain but revellers might want to keep the wellies and raincoats firmly on.

The festival had to be shut down temporarily on Friday afternoon when lighting from an electrical storm threatened safety.

Lily Allen’s appearance on the Pyramid Stage was delayed and Rudimental were among those who had their set cut short as the storm approached.

The sun will start shining again on Sunday, with a day of light clouds, gentle breezes, warm temperatures and no rain forecast - yet.

Monday is also expected to be dry but forecasters warned that the odd shower was still possible.

Festival-goers at least got to pitch their tents on dry ground before the downpours started on Thursday but the rain has turned parts of the grounds into a swamp.

Glastonbury has become famous for its unpredictable weather since it began in 1970.

Only eight festivals in Glastonbury's history have had no rain, and 2010 was one of the sunniest years, leaving many festival-goers suffering with heat exhaustion and sun-stroke.

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The hottest year was 1984, according to the Met Office, which was followed by the windiest ever year in 1985.

The headliners of this year’s festiveal are Metallica, Kasabian and Arcade Fire, with other major acts on the bill including The Black Keys, Massive Attack and Elbow.

A 26-year-old man from Reading died on Friday after having a bad reaction to ketamine.

On Wednesday, a 67-year-old woman died in her tent overnight from what police believe to be natural causes.