SS - it rained last year on July 1st. For some like me, it was on the bike, and made the last 20 or so miles a nightmare. Others complained of a wet run, though the sun was shining later on.
Twas a might chilly yesterday morning with a base layer, summer jersey and arm warmers. It did warm up a bit later on, but lesson learnt for next weekend. Get a good warm jacket and mudguards. That way at least your behind remains warm and dry.