The F1 race calendar has links to the latest 16 day weather forecast for all F1 circuits in the 2019 season. Forecasts update up to two times each day and make use of the high resolution GFS 0.25 degree computer model data.
Troll from Trondheim
Winter 2022-23 forecast issued
Winter 2022-23 UK weather update
Winter 2022-23 second update
Medium range weather forecasting
Daily weather by email
14 day outlook
A huge range of charts and data is freely available.
Models include UK Met Office UKV and MOGREPS-G, ECMWF, NCEP GFS, Meteo France Arpege and Arome.