Heavy rains combined with rising temperatures, which will thaw the snow that has blanketed much of Britain, have sparked fears of flooding across the country.
The South West is likely to be hardest hit and downpours throughout the night.
The Environment Agency (EA) has issued 34 warnings, the second highest alert which means flooding is expected.
Another 219 alerts, meaning flooding is possible, were also in place across the country after the agency warned of an increased risk of surface water and river flooding.
The Met Office has issued a severe weather warning for localised flooding in many parts of the country.
The rain combined with rapidly melting snow could cause further disruption on the roads, after heavy snow storms on Friday night left hundreds of people stranded on motorways in the north of England.
Temperatures will steadily rise above freezing before reaching more than 10C (50F) in the south on Sunday.
Sky News weather producer Chris England said there will be “sometimes heavy rain for all of us”.
“The rain will gradually clear from the west, becoming largely confined to northeast Scotland and southeast England by morning,” he said.
“Blustery showers following across Ireland will spread to Britain’s west coast later, but most inland areas will be dry. A continuing thaw combined with the overnight rain will bring a risk of local flooding.”
Forecasters are predicting a very wet spell through the latter part of Monday and into Tuesday.
An EA spokesman said: “Emergency teams from the Environment Agency will be out in force throughout the weekend, shoring up defences, monitoring river levels and clearing blockages from watercourses.”
Around 18 buildings were flooded in various locations across Wales on Friday night, including two houses in Solva, Pembrokeshire, and two in Dolgellau, North Wales.
Flood Fears As Snow Melts And Rain Moves In – Sky News
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