Will the hottest day of the year coincide with Glastonbury Festival? 12/1 odds are being given that it will by bookmaker Paddy Power.
The Irish bookie is also offering outlandish odds that the Pyramid Stage will be struck by lightning (25/1) and that the three-day music festival at Worthy Farm in Somerset will be cut short due to rain (20/1).
What about a flutter on how many people will be arrested between June 25 and 29 onsite this year? Less than 100 arrests offers odds of 8/1 while 160 or more gain you 2/1. In 2009 156 people were arrested. In 2010 it was 117.
It has been reported that William Hill has stopped taking bets on Kasabian to headline the Pyramid Stage on Sunday night. Elbow is the bookies' favourite for the Saturday night slot, with Arcade Fire confirmed for Friday night.
Emily Eavis ruled out a Prince appearance this year but that hasn't stopped 3/1 odds from William Hill, said Virtual Festivals.
Meanwhile, parts of Britain basked in weather warmer than mainland Spain and Ibiza as temperatures reached over 20C (68F) yesterday.
London was the hottest part of the country, with temperatures reaching a maximum of 20.4C (68.7F) at St James's Park at 1pm, according to the Met Office.
This made the capital hotter than Madrid (17C/62.5F), the Balearic Islands (18C/64.5F) and the French Riviera (16C-17C/61F-62.5F), weather forecaster MeteoGroup added.
The balmy weather will remain for much of the week ahead, forecasters say.