Can you guess how many Glastonbury Festivals have been rain-free? Only eight out of the last 32 events have been completely dry!
And it looks like 2015 won't increase that number. Some rain is expected this week and over the weekend. But unlike 2005 and 2007 there shouldn't be a deluge or enough rain to create the famous mudbath.
Festival-goers arriving at the site on Wednesday and Thursday can expect mostly dry and bright conditions to pitch their tents. There is just the chance of an isolated shower. You takes your chances!!
However on Friday when the main stages kick-off, the first round of rain will come across Worthy Farm. I should arrive during the afternoon and carry on until the evening. Hopefully it won't be too heavy (metal) but it will be a case of singing in the rain with Florence and The Machine.
Certainly the ground will dry up on Saturday. A fine day with decent sunny spells. Warm as well... 21 or 22 degrees. Great for the Glastonbury party with Kanye West doing his thing.
But there's a dampener coming along on Sunday. An Atlantic weather system is waiting in the wings. It should make its entrance early on. It will make the day wet and windy - a fresh breeze is expected. Hopefully it will clear through by the evening to allow The Who to take us back to "My Generation".
More day-by-day Glasto weather guidance straight from the horse's mouth:
We will of course keep you up to date with the weather line-up. Follow @bobsweather for the latest.