Temperatures are set to drop as low as -4 tonight across Derbyshire, with the Met Office forecasting a widespread frost.
The regional forecast states it will be: "a colder night than of late with generally clear skies allowing a widespread frost to form away from the coast. Minimum Temperature -4 °C."
Derbyshire County Council's gritting team treated all primary routes this morning and will be gritting secondary routes throughout the county this afternoon. Teams will then re-treat primary routes from 4am tomorrow (Thursday).
Nationally, temperatures could fall to -7 or -8, according to BBC Weather.
Take care if you're out and about on the roads tonight and tomorrow morning.