A39 Countisbury Hill is closed in both directions until further notice due to significant snowfall and drift.
The county council advises drivers to use alternative routes to and from West Somerset.
More top news
It'll be a frosty start to Tuesday morning with showers and hail later, but some sunny spells.
It's going to be a frosty start to Tuesday morning with showers and hail expected later in the day.
Bob Crampton is forecasting a bitterly cold spell on Tuesday - so don't put those wooly jumpers away just yet!