Drivers are being warned to take extra care this morning
A Yellow Met Office weather warning for snow and ice remains in force until 11am and then there's another one tomorrow afternoon until Friday lunchtime.
The M5 in Somerset is closed northbound due to an accident and there's diversions from J24 - J23 via the A38 through Bridgwater.
There's also reports of snow on The A303 from A359 at Sparkford to A371 at Wincanton.
There has been reports of light snow across South Devon including Newton Abbot, Teignmouth and parts of Torquay.
The A30 is blocked westbound between Meldon and Sourton Down as two lorries are stuck in the snow.
Overnight there's been reports of snow settling in places like Dartmoor and Exmoor.
Emergency services say they've been in constant contact with each other - as they watch for possible disruption on the region's key routes.
Please drive carefully this morning, numerous accidents already. Not just snow, but hidden ice patches too. Please slow down and be alert.— DevonCornwall Police (@DC_Police) January 30, 2019
"Haldon and Telegraph Hills may see a small amount of snow.
The picture is still mixed for tomorrow but there's a high chance of heavy snow forecast in some parts of Somerset - much of Devon is expecting heavy rain according to forecasters.
Councillor Stuart Hughes, Devon County Council Cabinet Member for Highway Management, said: "We would urge everyone to be prepared.
"Our advice is to plan your journey, keep an eye on the weather forecast and please take extra care when travelling."
Dusting of snow in higher ground in the north of the county, salt applied to the main routes but please take care. #drivesafelyplease— Travel Dorset (@TravelDorset) January 30, 2019