Frost dates · Maryland
When is the first frost in Baltimore?
In a typical year, Baltimore’s first frost comes around October 31 and its last around April 10.
One year in ten the first frost comes as early as October 17, and nine years in ten it has arrived by November 12. One year in ten the last frost is over as early as March 27, and nine years in ten it is over by April 25. Baltimore averages about 93 nights a year at 32°F or colder, with about 204 frost-free days in between in a typical year. It’s frost season here, and the last frost usually comes around April 10. That makes it the 49th latest first frost of the 117 cities we track where it freezes most years.
Last updated
No freeze in the forecast for the next 48 hours.
Baltimore’s first frost turns up around Halloween, which feels very on brand for the city of Poe.
Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Frost dates, early, typical and late years
| Early year (1 in 10) | Typical | Late year (1 in 10) | |
|---|---|---|---|
| First frost | October 17 | October 31 | November 12 |
| Last frost | March 27 | April 10 | April 25 |
A frost date here is a night when the official thermometer reads 32°F or colder. Frost on the ground can show up on clear, calm nights a few degrees milder.
Cities with about the same first frost
- Salt Lake City, Utah: first frost around October 31
- Providence, Rhode Island: first frost around October 30
- Harrisburg, Pennsylvania: first frost around November 2
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00093721.