UK Weather: Frost, Wind, and Rain Forecast as Autumn Warmth Fades
BBC Weather
Temperatures are set to drop across many parts of the UK as summer-like September warmth gives way to more autumnal conditions.
Key Takeaways:
- A weather front will bring heavy rain on Wednesday, moving eastwards, leaving cooler air in its wake.
- Daytime highs will be close to the late September average but cold nights are expected, with frost possible in some locations on Thursday morning.
- Higher temperatures will return at the end of the week, with south-east England expecting mid-20s Celsius.
Unseasonably warm weather has affected the UK over the last couple of days with temperatures climbing to around 25°C in parts of England, Wales, Northern Ireland, and Scotland. However, a weather front will continue to bring outbreaks of rain erratically eastwards across the UK on Wednesday, sweeping away the warmest conditions.
- Some downpours will be heavy and thundery, but little to no rain is expected in the south-east of England.
- This will allow warm air to hold on there with temperatures reaching the mid-20s Celsius, while elsewhere highs of 14–20°C are expected, around the average for this time of year.
After a few warmer nights recently, a distinct autumn chill on Thursday morning may come as a surprise to some, with temperatures tumbling into single figures in most places due to clearing skies and lighter winds. However, these values will be close to those expected in late September.
- In eastern Scotland, especially around the Grampians, temperatures could dip low enough for a coating of morning frost on the grass.
- Sunny skies will gradually temper the chill, but windier and cooler conditions are expected later next week.
After a milder start to Friday, afternoon temperatures will reach the mid-20s Celsius again in south-east England as a ridge of high pressure holds on. Elsewhere, temperatures will stay in the mid to high teens with large amounts of cloud and occasional rain.
- Throughout the weekend, temperatures will be close to the seasonal average, with pleasantly warm and sunny spells.
- On Saturday, further showers are likely for many western areas, while on Sunday, spells of rain will sweep most areas at some point.
As we move into the final days of September, there are currently no signs of any significant bouts of unseasonable warmth. While some pleasantly warm and sunny days are still possible, forecasts show a changeable pattern overall, with occasional rain for most areas and windier conditions in the north and west.