Well today and tomorrow couldn't be more different.
After a mild, damp, misty night, we start to see showery outbreaks of rain nosing into parts of the West Midlands. The East Midlands remain dry for most of the morning.
During the course of the day, a new cold front catches up the old slow moving one (see UK graphic), and this afternoon the rain becomes more widespread. There'll be widespread outbreaks of rain, but they will generally light and patchy. It will turn breezy in the frontal cloud and the rain should reach The Wash by sunset.
Behind this skies clear from the west and where they do, temps fall quickly, so tonight will be quite chilly with the chance of a frost.
Chilly start then on Weds. A decent day but with some uncertainty over how far the cloud will clear and where the N/S boundary will be. Chance of sun for the north especially.
On Thursday, the front starts to wriggle back in and another pushes in from the west. So unsettled again, but the front won't be especially active though the rain will be widespread.
Friday will be wet through the East Midlands inparticular and this will take time to clear.