The area straddles the Mediterranean and the continental climatic regions where in this part of France the climatic transition is rapid, winter snow being frequent in Montélimar but rare some 20 - 30 kilometers further south.
This area lies at the intersection of the Mediterranean and continental climates, where the climate change is pronounced, resulting in frequent snowfall in Montélimar but infrequent snowfall some 20-30 kilometers to the south.