Britain is set to be battered by thunderstorms or heavy showers through the rest of the week, threatening travel disruption and increasing fears of flash floods.
The Met Office has warned of “tricky” driving conditions in heavy downpours while predicting rain and cooler temperatures from Wednesday through to Saturday.
Some showers will be heavy and thundery and they could include hail as Britain is drenched – but it will start to warm up again next week.
The Environment Agency has warned that homes and roads are at risk of flooding on Wednesday due to heavy rain and showers, with the biggest risk in parts of south Wales and central, southern and northeast England.
The Met Office said occasionally heavy rain will spread into northeast England and southeast Scotland on Wednesday.
Showers in the south will turn heavy in the afternoon with hail and thunder.
Some places will see a mixture of sunshine and showers, but it will be windy and it will feel chilly under the rain.
In the evening, rain will linger in the northeast and there will be showers across the northwest.
Showers in the south will gradually disappear.
Temperatures are expected to peak at 16C in the south and just 6C in the north.
Forecasters have warned that flash floods are possible in parts of England and Wales.
The Environment Agency warned: “Local flooding is possible from surface water on Wednesday across central and southern parts of England and southern Wales.
“Local flooding is also possible from rivers in parts of the northeast of England on Wednesday.
“This is due to heavy rain and showers.
“Land, roads and some properties may flood and there may be travel disruption.
Thursday will bring more rain with longer and heavier spells across western parts of the UK.
Conditions in the far north will be drier and brighter.
Showers are also expected in places on Friday and Saturday before a fine and dry Sunday.
Temperatures will start to warm up on Sunday, hitting 17C in the south and 13C in the north before climbing through next week as prolonged spells of sunshine return.
Met Office five-day weather forecast
Occasionally heavy rain spreading into northeast England and southeast Scotland.
Windy, and feeling chilly under the rain.
Sunshine and showers for southern and northwestern parts, with showers in the south turning heavy for the afternoon and giving hail and thunder.
Rain lingering in the northeast.
Showers across southern parts gradually dissipating overnight.
Winds generally light but for a fresh breeze in the east.
Scattered showers persisting across the northwest.
Cloudy with patchy light rain across eastern parts.
Scattered showers across western parts merging to some longer spells of rain and heavy at times.
Drier, brighter in the far north.
Friday to Sunday
Friday, scattered heavy showers after a chilly start.
Showers in the east on Saturday, with drier, sunnier weather in the west.
Sunday, fine and dry after a cold, frosty morning.