Ole Gunnar Solskjaer says he has no intention of taking the FA Cup lightly as he prepares to lead Cardiff for the first time, in today's third-round clash against Newcastle United.
The club are without a win since their 1-0 defeat against West Bromwich Albion in December.
The match kicks off at three o'clock.
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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.