The two climate types that are found in the eastern half of the Great Plains are humid subtropical climate and humid continental climate.
Explanation:
The north-south expanse of the eastern Great Plains is so tremendous that it makes it subject to variation in the climate patterns to be different in the north and the south.
The proximity of the northern half of the Great Plains to the temperate zone makes it comparatively less hot than the southern half.
On the other hand, owing to the orientation of the southern half well within the tropical zone, the climate there is comparatively hotter.
