To camp or not to camp that is the question ?

Was planning a family camping trip to start tomorrow but weather not looking good. Rain on most forecasts except for one site which states cloudy with sunny periods. Who do you believe ? Do we stay and it's fine and we wished we'd gone or do we go and get rained out, difficult especially when you have two small children to consider. British weather HUH!
Well if you hear from me tomorrow we stayed if not where totally mad and gone for it!