The Department of Infrastructure says the Mountain Road will remain closed this afternoon.
This morning, part of the route was closed after a wall collapse - later another section shut because of the weather.
Initially, it was thought it could reopen at lunchtime.
However, the DOI says a road closure is now in place until 4.30pm between The Bungalow and Lheaney Road in Ramsey.
Gales put two ferry sailings at risk tonight
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Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police