A Welsh Government bill aimed at making walking and cycling in Wales safer is being launched today.
It puts a duty on local authorities to improve conditions for cyclists and pedestrians.
Our Correspondent Richard Morgan has been to a school in Ely to speak to some of those who helped launch the bill.
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The heaviest bursts are expected in the south and east, with some western areas either remaining dry or becoming dry by dawn.
Many places will start dry, but rain in the southeast will spread to most for a time overnight.
The family of Isaac Nash who went missing after being swept out to sea last summer have presented a cheque for £10,000 to the RNLI.