The UK is preparing for a warm spell, with temperatures forecasted to reach 21C on April 21, particularly in London. Following a recent mini heatwave, the south is expected to experience the highest temperatures, while areas in the north, such as Cheshire and Manchester, will approach 19C. The Midlands will see temperatures around 18C in the afternoon, with Scotland also enjoying highs of 17C. Despite recent record highs of 26.5C earlier this month, the weather has since cooled, bringing chances of snow and rain across the country. Jim Dale, a forecaster for British Weather Services, suggests that late spring could see even warmer conditions, potentially exceeding 30C. The Met Office indicates that the southeast will likely remain the driest and brightest, while the north may experience drier conditions later on, although the south could face showers or longer spells of rain.