Weather shields for underneath a dock leveler are described herein. An example weather shield described herein includes an environmental barrier disposed underneath a deck where the environmental barrier includes a first section and a second section. A tensioner is coupled to the environmental barrier and creates a vertical tension in the environmental barrier in an upward direction such that a) when the deck is in the raised position, both the first section and the second section are in vertical tension; b) when the deck is in the lowered position, both the first section and the second section are in less vertical tension than they are when the deck is in the raised position; and c) when the deck is in the intermediate position, the first section is in appreciably greater vertical tension than the second section such that there is a discrete incremental difference in vertical tension in the environmental barrier.