Best times to visit national parks for less crowd and better weather

National parks are increasingly crowded, which kind of detracts from the peaceful wilderness aspects of a visit. For Bloomberg, Gordy Megroz, Marie Patino, and Denise Lu used AllTrails data to figure out when to avoid the crowds and then layered in weather data to define the best times to go.

Radar chart haters can shut it. I also like the bulls-eye graphics for each park that show precipitation, maximum temperature, and visitor volume aligned by time of year.