Just don’t put your snow shovel away until Memorial Day. You’ve been warned.
Washington, D.C.’s famous cherry blossoms peak around March 20–25. This is the first time the Northeast feels the shift. In Portland and Seattle, March is less about warmth and more about light . The rain persists, but the sun rises earlier and sets later. The moss glows an electric green. Spring here isn’t a temperature change; it’s a mood change. when is spring season in usa
This is the one most schoolchildren learn. It begins on the vernal equinox, when the sun’s rays shine directly on the equator, granting nearly equal day and night. In 2024, that was March 19. In 2025, it will be March 20. This definition is poetic—a moment of cosmic balance. But it’s also almost useless for daily life. The weather on March 20 in Minneapolis feels nothing like the weather on March 20 in Atlanta. Just don’t put your snow shovel away until Memorial Day
But neither of these definitions will tell you when to plant your peas. To understand American spring, you have to understand phenology —the study of cyclic biological events. When does the red maple bloom? When do the robins return? When does the last frost hit? This is the first time the Northeast feels the shift
This is where calendars go to die. Chicago, New York, and Boston experience “spring” as a series of battles. One day it’s 68°F and people are eating lunch outdoors. The next day it’s 34°F with sleet. The phrase “April showers” is a euphemism for “relentless, freezing disappointment.” True spring—defined as sustained temperatures above 50°F—doesn’t arrive in New York until mid-April. In Minneapolis? Not until late April. In Denver? You’ll get a blizzard on May 5. This is also the season of “mud season” in Vermont and New Hampshire—a two-week period when dirt roads become impassable and hiking trails are closed to prevent erosion.
In Houston, Atlanta, and Dallas, spring is already a month old by the time the equinox rolls around. Daffodils appear in late February. The first lawn mowing happens in early March. But this region knows a cruel trick: the “false spring.” A glorious 75°F week in February will inevitably be followed by a 35°F freeze that kills the azalea buds. Old-timers in Texas won’t plant tomatoes until after the “Easter Freeze” has passed.