Drivers in Devon have endured continued treacherous conditions on Devon's roads after two days of snow and ice.
Temperatures dropped to -14C in places on Saturday night, freezing fallen snow. Motorists were to take extra care on icy roads.
They only reached 0C on Sunday, and were due to drop to -6C on Sunday night, the Met Office said.
Dartmoor Zoo, near Plymouth, said it had closed its doors to the public because of the weather.
Animals kept indoors
The A386 Tavistock Road was closed for some time because of snow.
Nigel Lang, from the Devon Air Ambulance, based in Exeter, gave a warning about sledging.
He said: "It's great fun, but what we would ask people to do is think about the sort of accidents that occur when people hit solid objects at the bottom of the slope: fences and the like."
Exeter Airport said it was open, but routes with other airports affected by the weather were disrupted.
Although Dartmoor Zoo has closed to the public, staff have been trying to get in to look after its animals, the Sparkwell-based attraction said.
Some of the animals which usually had free reign within their enclosures, including tigers and a jaguar, were kept indoors overnight to protect them from the conditions.
Curator of animals Colin Northcott said: "It's all part of the job. The animals still need to be cared for regardless of the weather."
Outbreaks of snow were due, turning to sleet or rain near coasts, with further risks of ice on roads, the Met Office said.