Tuesday is a changeover day with many parts continuing to enjoy warm temperatures. It will be bright and sunny across central and northern counties but cloud is pushing further north during the day. By the end of the morning light rain will arrive in south Wales and become more widespread later.
In the brighter weather we could see 20C or 68F but under the cloud it will still be a respectable 16-17C. Heavier rain will push across Wales overnight into Wednesday before clearing to sunny spells and showers. There's more rain to come on Thursday before drying out on Friday.