There are big games for Cardiff and Wrexham tonight as both sides are in action in the play-off semi finals.
Cardiff are away to West Ham while Wrexham are at home to Luton.
Both Welsh sides lost two nil in their first leg of the play-offs.
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Some locally heavy showers are possible overnight, particularly in the east, where some thundery downpours are possible.
Wayne Pivac praised Scarlets' attacking style as they secured the Guinness PRO12 title with a stunning 46-22 success against Munster.
Scarlets sealed a famous victory at the Aviva Stadium in Dublin with an emphatic 46-22 victory over Munster in the Guiness PRO12 final.