Frost dates in Harford County, Maryland
The average last spring frost in Harford County falls Apr 3 to Apr 19 and the average first fall frost Oct 25 to Nov 6, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 7a to 8a. Places: Aberdeen, Aberdeen Proving Ground, Bel Air North, Bel Air South, Darlington, Edgewood. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 21001 | Aberdeen | Apr 10 | Oct 30 | 7b |
| 21005 | Aberdeen Proving Ground | Apr 10 | Oct 30 | 7b |
| 21009 | Bel Air South | Apr 10 | Oct 30 | 7b |
| 21010 | Edgewood | Apr 10 | Oct 30 | 8a |
| 21014 | Bel Air North | Apr 10 | Oct 30 | 7b |
| 21015 | Bel Air South | Apr 10 | Oct 30 | 7b |
| 21017 | Riverside | Apr 10 | Oct 30 | 7b |
| 21028 | Apr 3 | Nov 6 | 7a | |
| 21034 | Darlington | Apr 3 | Nov 6 | 7a |
| 21040 | Edgewood | Apr 10 | Oct 30 | 7b |
| 21047 | Fallston | Apr 10 | Oct 30 | 7b |
| 21050 | Bel Air North | Apr 3 | Nov 6 | 7b |
| 21078 | Havre de Grace | Apr 10 | Oct 30 | 7b |
| 21084 | Jarrettsville | Apr 3 | Nov 6 | 7a |
| 21085 | Joppatowne | Apr 10 | Oct 30 | 7b |
| 21130 | Perryman | Apr 10 | Oct 30 | 7b |
| 21132 | Pylesville | Apr 3 | Nov 6 | 7a |
| 21154 | Apr 3 | Nov 6 | 7a | |
| 21160 | Apr 3 | Nov 6 | 7a | |
| 21161 | Apr 19 | Oct 25 | 7a |
Nearby counties
Cecil County Baltimore County Baltimore city Kent County Queen Anne's County Carroll County
All Maryland counties · Download Maryland frost dates (CSV)
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