As the opening acts perform on Friday, Glastonbury festival attendees can anticipate "dry, sunny weather.".
According to the Met Office, there will be "a good deal of dry, sunny weather," with a likely high temperature of 25C (77F).
The site had been "blessed with sunshine" recently, according to BBC weather forecaster Matt Taylor, but he issued a warning that "a few spots of rain" were possible.
But it will be mostly dry, he continued.
"Over the next few days we expect a little more cloud coming," he continued, adding that this will bring in some humid air.
Then, as Saturday progresses into Sunday, a more active weather feature will move in.
"And that once more brings the possibility of showers, a resumption of something a little less humid, and a strengthening breeze. ".
Due to this weather front, the site will initially be dry before becoming humid as the day goes on and culminating in "particularly sticky nights.".
The worst is probably going to happen on Friday through the beginning of Sunday, he said.
Although there is a slight chance of drizzle on Friday, the greatest chance of showers will be on Sunday, he continued.
"The breeze increases, and it will be drier once more for the packing up on Monday. ".
He spoke following Thursday's 25.2C (77.36F) highs in the nearby town of Yeovilton, according to the Met Office.
On Friday, Arctic Monkeys will perform at the Pyramid Stage, drawing an estimated 200,000 spectators to the venue.
In addition to film screenings, theater, and circus performances, the festival in Pilton, Somerset, will feature a discussion with British-Iranian charity worker Nazanin Zaghari-Ratcliffe, who spent six years in prison in Iran.
It's possible that The Churnups, a band that's unknown to the public, are actually the Foo Fighters' cover band.
Additionally, on Friday morning, fitness expert Joe Wicks will lead an exercise class for those who are feeling energized.
The festival was officially opened on Thursday by Michael Eavis, 87, a co-founder of Glastonbury, who sang a number of timeless songs on the Park Stage, including a cover of Frank Sinatra's "My Way."