Daytime temperatures have been well below average for the time of year in the Anglia region but the nights will be even colder.
An area of low pressure will be sitting over Scandinavia in the next few days, allowing cooler air to feed in from the north west, which means more fresh days and chillier nights to come.
The graphic below shows the average night time temperatures for August.
However Tuesday night is going to be much cooler and temperatures will be below average in most areas.
Somewhere like Santon Downham, Suffolk could be as cold as 4C (last night it fell to 7.7C)
It would need to fall below 2.9C to be the lowest temperature recorded in the Anglia region this summer.
Although this may seem cold, it's certainly no record breaking temperature. The coldest ever low recorded in the UK in August was -4.5C back in 1973.
As for the days, it looks like temperatures will start to recover by the end of the week and they could be back to average by Bank Holiday Monday but that's doesn't mean settled conditions.