There's a change ahead! The 500hPa charts below certainly show it well. See how early on we have that 'n' shaped ridge which has high pressure underneath it, but then notice the 'u' shape trough breaking through on Sunday, this bringing the more unsettled weather and low pressure. We then stay with a

Interesting to see the latest 3-month forecast through to early January. The forecast temperatures and rainfall graph below is for London but it's good to use as a broad -brush look for the whole of the British Isles. Notice the two temperature falls, one around 18th November to 6th December and then