Choose a destination (Rodez, Lyon, Toulouse, etc.). Find the "History" section on the page. Choose a month, day, and year. When the day comes up, select "Month." You will get a page with a calendar and tabular weather data for the month and year selected.
Rodez in April 2009 averaged in the mid-fifties, and it rained on over one-half the days.
I start from Le Puy the same day as you or maybe one day later.someone once said there is no such thing as bad weather just bad clothing,so I go prepaired.but I will keep an eye on the on line weather reports.