Festival of Motorcycling organisers say there'll be a one-hour delay to today's programme.
It's the final day of racing at the festival, with the Senior Manx Grand Prix due to get underway.
Clerk of the Course Gary Thompson says after advice from Ronaldsway Met Office the race will be held back because of mist and low cloud over Snaefell.
Roads will now close at 10.30am, with racing set to start at 11.15am.
Rapists's appeal against sentence thrown out
Last chance to become next TT's charity partner
No gas price hike after regulator review
Cafe hits back after staff abused
Online appointments being considered by sexual health clinic
Treasury can’t say how much is made from medicinal cannabis
Road closures planned for tin baths this weekend
DOI has no junction safety concerns over Iceland plans