The UK is set to experience a significant warm spell over the weekend, with temperatures potentially exceeding 30°C, particularly in the southeast, influenced by Tropical Storm Debby in the US. The Met Office indicates that while some areas will enjoy sunny conditions, others in the north and west may face heavy showers and thunderstorms. Sunday and Monday are expected to be the hottest days with temperatures possibly reaching the low to mid-30s. However, prior to this warm weather, the UK will endure a few unsettled days of rain and drizzle, particularly in northern regions. After this heatwave, conditions are expected to revert to cooler temperatures by Tuesday. Meteorologists emphasize that while the heat is on the horizon, rain gear should not be put away just yet as unsettled weather persists before the warm air mass arrives.