The early weather forecast in Northamptonshire for Sunday's British GP for Friday through to race day on July 10th says an overcast weekend – with a persistent threat of showers and drizzle is likely for Silverstone. Temperatures in the low twenties (C) should dominate, with the highest probability of rain due on Saturday (qualifying) afternoon. "The weather can throw anything at you," said Toyota's Jarno Trulli. "You have to be prepared at Silverstone." Strong wind is another factor at the flat former war airfield.