I'd like to say a big "THANK YOU" to Trevor "The Wevver" Calvert at Brize in the '80s - the best met man I ever met. I remember battling in to Ops one snowy morning for an early departure (Deci or Dulles or some such) to find Trevor practically skipping around the office with delight. When we said "what have you got to be happy about, you lot didn't forecast this?" he proudly exclaimed "I did and I'm the only person in the country who got it right. I told Bracknell they were wrong and they told me to sod off". He was right more often than not and he was a decent chap to join for a pint in the mess bar .
As for accuracy, I once heard John Kettley say that the most accurate way to forecast is to say "tomorrow will be the same as today - you're more likely to be right than trying to do it properly".