Houses were cleared, motorists stranded and trains flooded in parts of England.
The Environmental Protection Agency has issued 20 flood warnings and 64 warnings nationwide.
The majority is represented in the Midlands and the Northwest, although warnings are also issued in Ruswarp near Whitby and Petts Wood in south-east London.
The Met Office has given yellow warnings of rain in Manchester, Liverpool and the northeast.
The Steeping River near Thorpe St Peter near Skegness, Lincolnshire, burst its banks on Wednesday night after heavy rain.
The rising river also caused problems in Wainfleet, where the residents were evacuated.
Jean Hart, who has lived in the city for 40 years, said it was the worst flood she had ever seen.
"Seeing our house underwater is absolutely terrible," she said.
Rescue services have said They will save their turtle Mr. T. from home while she was reunited with her cat Aurora.
The Cricket World Cup match between India and New Zealand on the Trent Bridge in Nottingham was postponed due to rain. The field check is due at 11.30 am CET.
Skegness-Boston traffic was suspended due to flooding on Saturday, while Merseyrail canceled some trains on the Chester and Ellesmere Port lines for water on Hooton's tracks.
The company said the rides could be "significantly longer" and introduced a modified timetable with replacement buses.
Stagnant water also causes problems on many roads in the northwest, including the M53.
Are health bosses Warns people who go to Arrowe Park Hospital to avoid using exit 3 of the highway.
Drivers, including a minibus with Indian tourists, were arrested overnight in Lambley near Nottingham and picked up by local residents.
Resident Malcolm Bamford said: "We had two in our house and the neighbors had three, and then there was a group of about eight Indian tourists in a tiny tiny bus and everyone wanted to use the restroom.
"Once we had about a dozen people in my little bungalow."
It is also expected that the trains between Worcestershire and Warwickshire will be interrupted throughout the day.
National Rail Inquiries reported that heavy rains had flooded the tracks between Whitlock's End near Solihull and Stratford-upon-Avon.
Northumberland's Chillingham recorded nearly 10 mm of rainfall in one hour on Thursday morning, the Met Office said.
The village had 73 mm of precipitation over a period of 28 hours – more than the average of 66.4 mm for the entire June.
In Waddington, Lincolnshire, it dropped nearly 40 mm within 14 hours, while Coleshill fell 30 mm in Warwickshire over the same period and 31 mm in Astwood Bank in Worcestershire.