The UK just recorded its hottest June day on record (36.7°C in Somerset), and cooler weather is moving in this week as the broader European heatwave begins to shift eastward. Temperatures across Europe hit record highs with deaths reported in France, Italy, and Spain — estimates suggest over 200 deaths linked to the heat since Sunday. The real question is when the next heat event arrives, which matters because extreme heat is now occurring back-to-back rather than as isolated events, suggesting climate patterns are shifting toward more frequent severe weather.