Overview

• Official guidance points to a sunnier, milder start in the east on Monday, while the west turns cloudier with showers and thunderstorms and highs generally between 21 and 26 degrees Celsius.
• The DWD warns of heavy‑rain danger from the Eifel to the Upper Rhine lowlands, with the western half staying unsettled and storm‑prone into the night to Tuesday.
• Independent forecasts via wetter.net flag short‑duration totals of 20–40 liters per square meter, locally up to 60 in six hours, raising the risk of flooded streets, basements and localized overflow.
• On Tuesday the east may still see sun and 21–25 degrees as many western areas struggle to reach 20, before rain and storms shift at times into the south and later the east by Wednesday.
• Temperatures trend down through midweek—example for Baden‑Württemberg from about 22–26°C Monday to 17–22°C Wednesday—as DWD expects repeated showers and smaller thunderstorms before conditions ease from Wednesday into Thursday.