Frost dates · 6 cities · zones 7a–8a
Maryland frost dates, city by city
Median last spring frost across 6 Maryland cities runs from March 24 in Baltimore to April 22 in Bowie.
| City | Zone | Last frost median | First frost median | Season | Jan → Dec |
|---|---|---|---|---|---|
| Baltimore | 8a | Mar 24 | Nov 21 | 244 d | |
| Frederick | 7b | Apr 2 | Nov 6 | 218 d | |
| Gaithersburg | 7b | Apr 1 | Nov 6 | 219 d | |
| Rockville | 7b | Apr 1 | Nov 6 | 219 d | |
| Bowie | 7a | Apr 22 | Oct 22 | 183 d | |
| Hagerstown | 7a | Apr 7 | Nov 4 | 209 d |
Medians from NOAA NCEI 1991–2020 U.S. Climate Normals at each city's nearest qualifying station; zones from the 2023 USDA Plant Hardiness Zone Map. Open a city for the 1-in-10-year dates, the station, and a planting calendar for every sauce crop.
All states →Build a plan from your ZIP →Earliest: Baltimore (Mar 24) · Latest: Bowie (Apr 22)