Summers in south Louisiana have always been hot and miserable, a result of geography: The region is bound by water, creating humid, swamp-like conditions that make temperatures feel warmer than what shows up on daily forecasts. But as climate change makes the earth warmer, heat-related deaths are climbing in Louisiana. Summers are getting hotter, particularly at night. The state experienced a record-setting summer in 2023, posting an all-time high in heat-related deaths.