Temps in Death Valley National Park can go beyond 125 °F ( 51 °C ) during winter . Fairbanks , Alaska . Utah 's National Zion National Monument is one of the most light pollution - free spots in the United States . Conditions can go from sun to blinding blizzard in the span of a half - hour hike on Mount Washington .
Temps in Death Valley National Park can go beyond 125 °F ( 51 °C ) during winter . Utah 's National Zion National Monument is one of the most light pollution - free spots in the United States . Conditions can go from sun to blinding blizzard in the span of a half - hour hike on Mount Washington .