Bands of persistent rain and frequent showers remain on the menu for the next four days as this low brings its worst to the UK. Friday will start dry, but with thick and threatening cloud cover above the circuit. Rain is expected to arrive from the south west just in time for the start of first practice and will last for much of the day. Both sessions will feature wet running, with the main band clearing by early evening. Temperatures will obviously suffer and struggle to reach 17 Celsius in the afternoon.
Saturday will start dry and there may even be a few sunny spells - especially early in the morning. Final practice will likely be the first dry session of the weekend, but all the while cloud will begin to build again from the west and there is a threat of scattered showers during the afternoon. Temperatures should recover slightly as a warmer air mass starts moving in from the south and reach 20 degrees as the battle for pole position hots up on-track.
While the rain risk in the latest numerical models is decreasing just slightly for Saturday, the flip side is a higher chance of showers on race day. Again, it will start dry with one or two sunny periods possibly in the morning during the support races, but heavy clouds will develop quickly and widespread scattered showers are currently forecast form during the afternoon right across the midlands and down towards London.
Shower development on Sunday will only really become clear on the day, but a race similar to the 2008 grand prix is a possibility, given the current forecast. Air temperature will climb to 20 or possibly 21 degrees Celsius.