Met Office Weather Events
The UK Met office has released an events calendar that will feature key sporting and other events taking place through-out the year and provide key weather information. The calendar currently features the World Cup in South Africa, Wimbledon and the Glastonbury festival.
When you click through to view individual events you are presented with a Google Map with a number of weather related layers. You can choose to view rainfall, the temperature, weather, UV and the pollen count directly on a Google Map of the event.