Visteon workers, including hundreds from Swansea, have been fighting for better pensions since the car parts manufacturer went into administration in 2009.
Today's petition presentation is the latest in a long line of attempts to fight for some of the money workers say they are owed.
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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.