You might spend a lot of your holiday inside, but if you want to see more of the area, taking a look at local weather data can help you. The hottest months are usually April and March, with an average temperature of 28°C, while the coldest months are January and December, with an average of 27°C. The rainiest months in Montelimar are October, September, June and August, with each month seeing an average of 303 mm of rainfall.