Temperatures could drop by more than 15C compared with last Thursday as cold front moves inRelief from the unrelenting heat is finally arriving this week across western Europe, with more unsettled conditions bringing the chance of rain. Temperatures are expected to fall back towards the seasonal norm, with some parts of the UK even falling about 3C below normal by Thursday. After such a scorching summer, and with a temperature drop of more than 15C compared with last Thursday’s heat, it may fe