Rain will spread south across Northern Ireland, northern England and northern Wales on Friday. The front will then cross the remainder of Wales and England Friday night with nothing more than a shower.
Behind the front on Saturday, it will be a cooler but dry across much of the United Kingdom with a cool northwest wind and partly sunny skies.
Temperatures will be 8-12 C (46-54 F) across Scotland, Northern Ireland, Wales and northern England. Temperatures will be 12-15 C (54-59 F) over southern England.
A weak warm front will cause some showers across western Scotland Saturday; otherwise, dry weather will prevail.
High pressure will build to the south and east Sunday, bringing more sunshine and warmth to Wales and England while the frontal boundary leads to more showery weather across Scotland and into northern Ireland.
Temperatures will be 10-14 C (50-57 F) in Scotland, Northern Ireland and northern England Sunday. Temperatures will reach 14-18 C (57-64 F) across Wales and the remainder of England.
Above-normal warmth is expected to prevail across the United Kingdom into early next week.