Planning for the weather is a good way to make your trip to Boutte relaxing and enjoyable, especially when you’re splurging. The hottest months are usually August and July with an average temp of 82°F, while the coldest months are January and February with an average of 58°F. The rainiest months in Boutte are August, July, June, and September, with each month seeing an average of 7 inches of rainfall.