Frost dates in New Castle County, Delaware
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The average last spring frost in New Castle County falls Mar 30 to Apr 19 and the average first fall frost Oct 26 to Nov 16, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 7a to 7b. Places: Arden, Bear, Brookside, Claymont, Delaware City, Glasgow. 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 |
|---|---|---|---|---|
| 19701 | Bear | Apr 7 | Nov 2 | 7b |
| 19702 | Glasgow | Apr 7 | Nov 2 | 7b |
| 19703 | Claymont | Mar 30 | Nov 16 | 7b |
| 19706 | Delaware City | Apr 7 | Nov 1 | 7b |
| 19707 | Hockessin | Apr 19 | Oct 26 | 7a |
| 19709 | Middletown | Apr 7 | Nov 2 | 7b |
| 19710 | Apr 7 | Nov 4 | 7b | |
| 19711 | Newark | Apr 7 | Nov 2 | 7b |
| 19713 | Brookside | Apr 7 | Nov 2 | 7b |
| 19716 | Newark | Apr 7 | Nov 2 | 7b |
| 19717 | Newark | Apr 7 | Nov 2 | 7b |
| 19720 | New Castle | Apr 7 | Nov 1 | 7b |
| 19730 | Odessa | Apr 7 | Nov 1 | 7b |
| 19731 | Port Penn | Apr 7 | Nov 1 | 7b |
| 19732 | Apr 7 | Nov 4 | 7b | |
| 19733 | St. Georges | Apr 7 | Nov 1 | 7b |
| 19734 | Townsend | Apr 4 | Nov 4 | 7b |
| 19735 | Apr 7 | Nov 4 | 7b | |
| 19736 | Hockessin | Apr 7 | Nov 4 | 7b |
| 19801 | Wilmington | Apr 7 | Nov 4 | 7b |
| 19802 | Wilmington | Apr 7 | Nov 4 | 7b |
| 19803 | Apr 7 | Nov 4 | 7b | |
| 19804 | Newport | Apr 7 | Nov 1 | 7b |
| 19805 | Wilmington | Apr 7 | Nov 4 | 7b |
| 19806 | Wilmington | Apr 7 | Nov 4 | 7b |
| 19807 | Greenville | Apr 7 | Nov 4 | 7b |
| 19808 | Pike Creek | Apr 7 | Nov 1 | 7b |
| 19809 | Wilmington | Apr 7 | Nov 4 | 7b |
| 19810 | Arden | Apr 7 | Nov 4 | 7b |
Nearby counties
All Delaware counties · Download Delaware frost dates (CSV)
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