Yellowstone In April 2024 Weather. Yellowstone weather by season and month when you visit yellowstone, it's best to have a good grasp of what the weather will be like before you hit the road or hop on a plane. Day and night temperature averages during april were 36.8 °f and 21.2 °f.

The weather is worst than the previous month since in march there is an average of 4.8in of. This report shows the past weather for yellowstone national park, providing a weather history for 2024.