Rivers have burst their banks in Belgium, France, Germany, Portugal and the UK, and there are warnings that further rain could flood thousands of homes.
In Poland, 183 people have died of hypothermia, many of them reportedly homeless people who were sleeping outdoors.
In Moscow, the number of people who have died because of hypothermia so far this winter has reached 223.
However a number of towns and villages in the west, south and east of the country are under up to half a metre of water, and river traffic has been suspended on parts of the countries main rivers, including the Rhine and the Danube.
Winds gusting at up to 200km/h (125mph) toppled a tree on to a car near Calw in southern Germany, killing a 13-year-old boy, and critically injuring his father. Another man died after his car overturned on an icy road near Hamburg.
About 1,000 people were evacuated from the town of Soemmerda, about 120 miles (200 kilometres) southwest of Berlin on Saturday after fears that river dikes along the Lossa River would give way.
A landslide destroyed a stretch of highway near Armamar in the north of the country and three cars were reportedly swept into the river Douro.
Rivers in several provinces were reported to have receded. However two women are missing - one who was riding a bicycle near a river and another who fell into a river during a violent rainstorm last Sunday.
In Alsace, in the north-east, emergency services were called out 800 times on Thursday to deal with damage from high winds. One man was severely injured in the east of the country when a tree fell on his car.
A heavy snowstorm hit northern France, with almost 300,000 left without electricity and most flights from Charles de Gaulle airport in Paris cancelled due to strong winds and heavy storms.
At least one major motorway in Paris was closed, leading to tailbacks of up to 75 miles in total around the city.
Some 20 railway lines in several regions of the country have been closed, and the Vltava river, which flooded seriously in the summer, is again very swollen. People were also put on alert along the Mze river, 75 miles (120 km) southwest of Prague. Parts of the river's embankment in Prague are also closed.
Two other people went missing in the same incident on Wednesday when waters swept through a mountain cabin where they were celebrating the New Year near Poiana Teiului, some 350km (220 miles) north of Bucharest. Hundreds of homes were also reportedly destroyed.