crispin rolfe, bbc news.hot weekend for some of us, as temperatures are expected to reach 30 celsius in some towns and cities, and we almost reached 30 degrees in northern parts of wales on friday. but it's not unusual to get these sort of temperatures injune — in fact, if you look at the past years, we've regularly approached the low to even mid 30s. so where is this hot weather coming from? as you might expect, from the southern climes. notjust quite hot air, but also humid air — and we'll notice the humidity rising as we go through the course of the weekend, some really balmy nights on the way. so the forecast for the early morning on saturday — some cloudier skies in the northeast, a few showers in the southwest, but elsewhere, a lot of clear, sunny weather to start the day. temperatures around 15 degrees in plymouth. so, the forecast, then, for the morning shows lots of sunshine, perhaps those few showers lingering there in the southwest. but through the morning into the afternoon, shower clouds will sta