We have some chilly nights, late evenings and early mornings expected this week.
This coming night temperatures will fall in many places, with a chance of slight ground frost in some rural spots of the east and south by dawn tomorrow morning,
Despite this - with a bit of a breeze, it'll remain mist and fog free.
The common misconception is that higher ground is prone to the lowest overnight temperatures but often valley areas or 'frost hollows' and areas made up of sandy soils can be colder.
A 'frost hollow' is a depression or low-lying area where cold air collects and is much more susceptible to frost than it's surroundings. Benson in Oxfordshire, Amersham and Chesham nestled in the Chiltern Hills, Buckinghamshire and Rickmansworth in Hertfordshire are well known 'frost hollows'.
Soil type can also affect overnight temperature. Sandy soils are less able to hold on to warmth, which can help temperatures stay up. Bournemouth Airport in Dorsetand Santon Downham in Suffolk regularly record some of the country's lowest overnight temperatures.