In November, the Trump administration released the fourth National Climate Assessment, which found Maryland faces shorter winters within 30 years. By 2040, the last freeze of spring will come two or three weeks earlier. The first freeze of fall will come two or three weeks later. The federal assessment also said rising sea levels risk drowning marshes and flooding low-lying areas like the Annapolis City Dock. Average temperatures could rise 4 or 5 degrees by 2050, the assessment found.