Germany Issues Widespread Red Alerts for Extreme Heat, Thunderstorms Possible

Germany's national weather service, Deutscher Wetterdienst (DWD), has issued widespread red alerts for extreme heat across much of the country on June 25, 2026, including major cities like Bonn, Frankfurt, and Cologne. Temperatures are expected to exceed 40°C through the weekend. The heatwave carries an increased risk of heat stress and forest fires. The combination of high heat and humidity could also trigger localized severe thunderstorms with heavy rainfall, hail, and powerful wind gusts.