Come rain or shine is a new free course from the RMetS.
Made by RMetS and the University of Reading.
Years ago, as part of the Computer Science 'A' Level that I took, I put together a teaching pack called 'Weatherwise' for the old BBC Micro Computers which handled weather data and produced synoptic chart diagrams.
If you complete the course, you can have it officially certificated by paying an optional fee. It will take around three weeks to complete.