Update: The weather_report project and the weather archive is no more. The effort required to maintain it was too great, for more information see here.
I often have ideas for little projects, most never go anywhere, but some act as distractions and bother me until I complete them. Recently, I wanted to know what the weather was in London a few days in the past. Easy, I thought, I just find it online. I couldn't. There are many sites with the current weather or forecasts. However, I could not find any with historical weather. So I quickly created one based on my knowledge of BBC Backstage.
I have put the system up here. It is still at an early state, it may change or be shutdown. At the moment it displays only last month's historical weather forecasts.