Tomorrow looks better but as for today and tonight…….
Today:
A mainly dry start but it won't be long before showers develop, becoming widespread and often heavy by lunchtime, with thunder likely. These are expected to continue through the afternoon then, perhaps becoming most concentrated across central Wales by dusk. Maximum temperature 13 °C.
Tonight:
Heavy showers continuing for many places at first, gradually become confined to southeast Wales later in the night and clearing most places by dawn. Clear spells developing away from showers.