A deep area of low pressure is forecast to approach from the Atlantic next week bringing a spell of windy weather.
This potential storm may also bring heavy rain to places, especially in the west, whilst some places further east could stay dry.
Many drought affected parts of England and Wales - where significant rainfall is still needed - may stay largely dry throughout the next week.
Before the arrival of wind and rain, though, some bursts of warmth will lift temperatures above average, possibly reaching the low-20s Celsius at times in south-east England.
After some unseasonable warmth over the past week, especially in the south, a weak weather front ushered in cooler air to Scotland and Northern Ireland on Friday, whilst warm and humid air stayed put in southern England and south Wales.
Into the weekend it does look as though most places will return to more typically late September conditions, with UK temperatures ranging between roughly 15 to 21C north to south..
Temperatures will again be close to the seasonal average through the weekend and it should feel pleasantly warm in the sunny spells.
Saturday will bring the chance of further showers to many western areas, while on Sunday spells of rain will sweep most areas at some point.
As we head into next week and the final days of September there are currently no signs of any significant bouts of unseasonable warmth.
As well as occasional rain for most, northern and western areas could see much windier conditions at times.
How much rain is on the way?
September rainfall so far has been very mixed across the UK.
In parts of north-west Scotland, there has already been 146% of expected September rainfall. At Achnagart in Highland, it has rained for the past 27 days.
In contrast, it has been very dry in parts of eastern England, with Bridlington in East Yorkshire seeing just 11% of expected September rainfall.
Low pressure systems will bring some rain over the next week or so. However, the bulk of the rain will fall in Scotland, Northern Ireland and western parts of England and Wales, with no significant or useful forecast further south and east.
Follow all the latest forecasts for where you are on the BBC weather website and app.