"Ne'er cast a clout 'til May be out"
Clout is from an Old English word for cloth or clothing, and the saying is a reminder not to be too quick to remove the winter woollies(warm clothing) before the chilly days of May are over.
Well...by the look of it folks we won't be casting any clouts at all for a while yet if the weather doesn't warm up soon !
I had to wear extra clouts today as it has been so cold !!