I've been reliably informed that you are a fount of knowledge when it comes to weather!
I am having kittens about our outdoor wedding in 2 weeks time (Bank Holiday weekend - yes I know...but I can but hope!). So the 2 week forecasts I've seen have predicted pretty much constant rain from the Thursday to the Monday at the wedding location (Earls Colne in Essex).
Are the forecasts that far in advance reasonably accurate in your experience?