Weather is only one factor, but it can really affect your travel plans, especially if you are planning a longer stay in Arco. The hottest months are usually July and August, with an average temperature of 21°C, while the coldest months are January and February, with an average of -6°C. The snowiest months in Arco are March, February, April and January, with each month seeing an average of 23 cm of snowfall.