Weather key factor in F1's first night race

SINGAPORE: With forecasters predicting a 50 percent chance of rain, weather will be a key factor when Formula One stages its first ever night race Sunday under lights on the public streets of Singapore.

Because the race is at night, track temperature will likely be less than the air temperature, creating slippery conditions for the drivers on a circuit lined with metal barriers.

To the slick track, add tropical Singapore's heat, humidity and a 50 percent statistical chance of rain on any given day in September.