Taking into account the local weather in Arc-sous-Cicon can help you maximize your time at the pool during your trip. The hottest months are usually July and August with an average temp of 60°F, while the coldest months are January and February with an average of 34°F. The rainiest months in Arc-sous-Cicon are June, May, July, and December, with each month seeing an average of 7 inches of rainfall.