Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

District of Columbia planting zones

District of Columbia spans USDA zones 7b to 8a on the 2023 map; the most common is 8a. The typical last spring frost is around Mar 29 and the first fall frost around Nov 8.

Zone map of District of Columbia

Outside District of Columbia is dimmed · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

ZIP codes per zone

7b5 to 10 °F398a10 to 15 °F232

At a glance

ZIP codes271
Zones7b–8a
Typical last frostMar 29
Typical first frostNov 8

Largest cities in District of Columbia

Washington7b 8a
Last frost Mar 29 · first Nov 8 · 266 ZIPs
Washington Navy Yard8a
Last frost Mar 24 · first Nov 18 · 4 ZIPs

District of Columbia extremes

From the 2023 zone data and NOAA 1991–2020 normals of the nearest station. One entry per town.

Mildest winters

highest zone

  1. Washington 200018a
  2. Naval Anacost Annex 203738a
  3. Washington Navy Yard 203768a

Coldest winters

lowest zone

  1. Washington 200077b
  2. Naval Anacost Annex 203738a
  3. Washington Navy Yard 203768a

Longest growing season

median frost-free days

  1. Washington 20006241 d
  2. Naval Anacost Annex 20373241 d
  3. Washington Navy Yard 20388241 d

Shortest growing season

median frost-free days

  1. Washington 20007202 d
  2. Washington Navy Yard 20376224 d
  3. Naval Anacost Annex 20373241 d

Wettest

precipitation per year

  1. Washington 2000748.5 in
  2. Washington Navy Yard 2037645.6 in
  3. Naval Anacost Annex 2037341.8 in

Snowiest

snowfall per year

  1. Washington 2000614 in
  2. Naval Anacost Annex 2037314 in
  3. Washington Navy Yard 2038814 in

Hottest summers

days at 90 °F or more

  1. Washington 2000148 d
  2. Washington Navy Yard 2037648 d
  3. Naval Anacost Annex 2037340 d

All places in District of Columbia

N

Naval Anacost Annex

W

Washington · Washington Navy Yard

Questions

What planting zones are in District of Columbia?

District of Columbia spans USDA hardiness zones 7b to 8a on the 2023 map. The most common zone is 8a (232 of 271 ZIP codes).

When is the last frost in District of Columbia?

Across District of Columbia, the median last spring frost ranges from about Mar 24 to Apr 9 depending on location; the typical ZIP code sees it around Mar 29. Look up your ZIP code for a local date.