Frost dates 2026–2027

District of Columbia frost dates by city

The average first fall frost in Washington is November 8. Median 32°F dates from NOAA 1991–2020 normals.

CityPopulationLast spring frostFirst fall frostGrowing seasonZone
Washington 693,645 Mar 29 Nov 8 224 days 8a
Cities with 5,000+ residents (Census 2025 estimates). Sources: NOAA NCEI 1991–2020 normals; USDA/Oregon State PRISM 2023 hardiness zones.

Growing zones in District of Columbia · Frost dates in other states