Nebraska
Average annual precipitation decreases east to west from about in the southeast corner of the state to about in the Panhandle. Humidity also decreases significantly from east to west. Snowfall across the state is fairly even, with most of Nebraska receiving between of snow each year. Nebraska's highest-recorded temperature was in Minden on July 24, 1936. The state's lowest-recorded temperature was in Camp Clarke on February 12, 1899.
Valentine National Wildlife Refuge
Valentine National Wildlife Refuge is located in the U.S. state of Nebraska and includes 19,131 acres (77.42 km). The refuge protects a portion of the largest remaining area of tall and mid grass prairie remaining in the U.S. Collectively known as the sand hills region of Nebraska, the dunes were the end result of the last ice age known as the Pinedale glaciation. During the Holocene glacial retreat the sand dunes that been deposited in their current location by the vast continental glaciers, were exposed and grasses eventually took over. The refuge is managed by the U.S. Fish and Wildlife Service and along with Fort Niobrara and John and Louise Seier National Wildlife Refuges, they form the Fort Niobrara National Wildlife Refuge Complex.