Frost dates in the District of Columbia

NOAA has no weather station with frost records inside the District of Columbia, but 11 stations within about 25 miles of its center do. Their typical last spring frost runs from March 24 to April 22.

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Frost in the District of Columbia

Frost dates for the District of Columbia's larger places

Typical (1-in-2) dates. Each place's page has the early and late years, a planting calendar and a printable planner. Zones are for the ZIP code nearest each place's center.

Hardiness zones in the District of Columbia

The District of Columbia's 267 ZIP codes in the USDA list fall in zones 7b to 8a: 7b (15 percent) and 8a (85 percent). Compared with the 2012 map, all of them moved to a warmer half zone (120 by a full zone or more).

A hardiness zone is about the coldest night of winter, which decides which shrubs, trees and perennials survive. Frost dates are about spring and fall, which decide when to plant. You need both. Read more about what the zones mean and what changed in 2023.

Stations just outside the District of Columbia

NOAA files every station near the District of Columbia under a neighboring state. The 11 NOAA stations within about 25 miles of its center are worth a look, especially one at an elevation like yours. Distances are from the middle of the District of Columbia's ZIP code areas.

Typical (1-in-2) dates at 32°F. For the early and late years, and a planting calendar built from your own dates, look up your ZIP code.