Parts of Britain were hit by flash flooding on Friday after heavy downpours.
Forecasters have warned that southern parts of the country are most at risk from "heavy rainfall, strong coastal winds and large waves".
A deluge of rain led to several streets being evacuated in the Lincolnshire town of Louth, with waterlogged roads also reported in Maidstone, Kent.
Met Office chief meteorologist Paul Gundersen said there was still "some uncertainty surrounding this weekend's weather" with the potential for heavy rainfall.
More top news
Ministers have deployed a new weapon to combat Islamic State - a dedicated Twitter feed.