Ronaldsway Met Office has issued a new weather warning stretching into Friday morning.
It will remain cold but dry for the next few days, with icy patches over the hills all day, with any lying snow tending to remain.
Hoar (white) frost with icy patches are possible anywhere that roads remain damp/wet at all levels during the evenings and overnight, as well as anywhere that remain in the shade during the day.
However, it will be cloudy and become milder on Friday afternoon with rain later.
As a result the Mountain Road will remain closed between Ramsey and the Creg Ny Baa overnight and this will be reviewed at midday tomorrow (Thursday) based on prevailing conditions.
This closure will include the Tholt Y Will Road from the S Bends near Tholt Y Will Cottage as far as the Mountain Road.