District of Columbia frost dates: Last spring and first autumn frost at every NOAA station, 1991-2020
Across District of Columbia's 1 NOAA stations with frost dates, the median last spring frost (32°F) runs from March 24 in Washington to March 24 in Washington; for half of its places it comes after March 24.
- Typical last spring frost
- March 24median of 1 places
- Typical first autumn frost
- November 18median of 1 places
- Earliest last frost
- March 24Washington
- Latest last frost
- March 24Washington
When is the last frost in District of Columbia, town by town?
Each date is NOAA's: "after March 24 in half of years" means the last 32°F night of spring came after March 24 in half of the years 1991-2020. By the 1-in-10 date, the last frost has passed in nine years out of ten.
Find your town in the list, or look up a ZIP code for the stations nearest it.
| Place or station | Last frost (median) | 1 in 10 after | First frost (median) | 1 in 10 before | Growing season | Zone |
|---|---|---|---|---|---|---|
| WashingtonWashington Reagan Airport | March 24 | April 6 | November 18 | November 5 | 241 days | 8a |
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities, growing-season length); station daily lows via ACIS (zone). Growing season: NOAA's median number of days between the last spring and first autumn 32°F night. Zone: the USDA's plant hardiness rule applied to the station's own 1991-2020 coldest nights.