The weather across the region is set to shift from summer-like conditions to more autumnal patterns over the coming week, with thunderstorms and a noticeable drop in temperatures. The transition will occur in two distinct phases: the first part of the week will feel almost summery, with some thunderstorms, while the second part will bring increased humidity and cooler temperatures. This change is due to the movement of an anticyclone, a high-pressure system, toward the Atlantic, combined with an active weather disturbance passing through the area between Tuesday evening and Thursday evening. This disturbance will bring significant rainfall and shift the wind direction northward, leading to the temperature drop. Monday is expected to be the warmest day of the week, with a summery feel in most areas, except in the Pyrenees and Languedoc-Roussillon, where light showers may occur. In some regions, morning fog may delay the return of the sun, which will eventually dominate the day with cumulus clouds that are not expected to cause any issues. The weather will remain generally pleasant, with only occasional cloud cover along the English Channel. Tuesday will bring a mix of warm weather and thunderstorms. While the day will start with a summery feel, the atmosphere will become more humid as the afternoon progresses, leading to the development of thunderstorms from the Pyrenees to Aquitaine. These storms may be locally strong, and the sky near the Mediterranean will appear more threatening. Elsewhere, the weather will remain pleasant, with only occasional cloudiness along the English Channel. Wednesday will mark a significant shift in the weather, with the return of rain across the entire country. A weather disturbance will bring substantial rainfall, and the risk of storms should be monitored near the Mediterranean. In the evening, Alsace and Franche-Comté will experience poor weather conditions. By the end of the week, a general cooling trend is expected, with temperatures dropping below average seasonal norms. Thursday will see continued rain from the Pyrenees to the eastern part of the country, with poor weather persisting near the Mediterranean in the morning. However, by the afternoon, the mistral and tramontane winds—strong, dry winds common in the Mediterranean region—will bring clearer skies to the west and north, where the air will be well-cooled by the north wind. In the mountains above 1600 meters, snowfall is expected. Friday will bring strong mistral and tramontane winds to the Mediterranean, accompanied by sunshine, while other areas will see more cloud cover, especially near the English Channel. Temperatures will be 2°C below average, and people may need to consider using heating systems.