More snowfall in the Valleys has meant that the A4233 Maerdy Mountain Road has been closed between Oxford Street, Maerdy, and Highland Place, Aberdare.
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Cloudy with patchy rain or drizzle, possibly turning heavier for a time.
Organisers say there will be increased security at the Urdd National Eisteddfod, which began in Bridgend today.
Any remaining heavy or thundery showers will clear eastwards this evening.