Frost dates in Delaware
Across 7 NOAA stations in Delaware, the average last spring frost ranges from March 29 at Lewes to April 11 at Greenwood 2Ne.
| Dover | April 4 | November 4 | 214 |
| Georgetown Sussex Co Airport | April 4 | November 6 | 217 |
| Greenwood 2Ne | April 11 | October 30 | 200 |
| Lewes | March 29 | November 14 | 231 |
| Newark Ag Farm | April 7 | November 2 | 208 |
| Wilmington New Castle Co Airport | April 7 | November 1 | 209 |
| Wilmington Porter Rsch | April 7 | November 4 | 209 |
Sources
- U.S. Annual/Seasonal Climate Normals, 1991 to 2020 (freeze probability dates by station), NOAA National Centers for Environmental Information, checked 1 November 2026
- Annual/Seasonal Normals 1991 to 2020 documentation, NOAA National Centers for Environmental Information, checked 1 November 2026
- 2024 Gazetteer Files, ZIP Code Tabulation Areas, US Census Bureau, checked 1 November 2026