Delaware frost dates
Average last spring and first fall frost (32°F) dates for 57 cities and towns in Delaware, from NOAA 1991-2020 climate normals. Average last frost dates range from March 29 in Lewes to April 11 in Seaford. Open a ZIP code for frost risk by date and a planting calendar.
| City | Avg last frost | Avg first frost | Season | ZIP codes |
|---|---|---|---|---|
| Bear | Apr 7 | Nov 1 | 209 days | 19701 |
| Bethany Beach | Apr 7 | Nov 2 | 209 days | 19930 |
| Bethel | Apr 8 | Nov 4 | 209 days | 19931 |
| Bridgeville | Apr 11 | Oct 30 | 200 days | 19933 |
| Camden Wyoming | Apr 4 | Nov 4 | 214 days | 19934 |
| Cheswold | Apr 4 | Nov 4 | 214 days | 19936 |
| Claymont | Mar 30 | Nov 16 | 230 days | 19703 |
| Clayton | Apr 4 | Nov 4 | 214 days | 19938 |
| Dagsboro | Apr 4 | Nov 6 | 217 days | 19939 |
| Delaware City | Apr 7 | Nov 1 | 209 days | 19706 |
| Delmar | Apr 10 | Oct 30 | 201 days | 19940 |
| Dover | Apr 4 | Nov 4 | 214 days | 19901, 19903, 19904, 19905 +1 more |
| Dover Afb | Apr 4 | Nov 4 | 214 days | 19902 |
| Ellendale | Apr 4 | Nov 6 | 217 days | 19941 |
| Felton | Apr 4 | Nov 4 | 214 days | 19943 |
| Fenwick Island | Apr 7 | Nov 2 | 209 days | 19944 |
| Frankford | Apr 4 | Nov 6 | 217 days | 19945 |
| Frederica | Apr 4 | Nov 4 | 214 days | 19946 |
| Georgetown | Apr 4 | Nov 6 | 217 days | 19947 |
| Greenwood | Apr 11 | Oct 30 | 200 days | 19950 |
| Harbeson | Apr 4 | Nov 6 | 217 days | 19951 |
| Harrington | Apr 11 | Oct 30 | 200 days | 19952 |
| Hartly | Apr 4 | Nov 4 | 214 days | 19953 |
| Hockessin | Apr 7 | Nov 4 | 209 days | 19707 |
| Houston | Apr 11 | Oct 30 | 200 days | 19954 |
| Kenton | Apr 4 | Nov 4 | 214 days | 19955 |
| Kirkwood | Apr 7 | Nov 2 | 208 days | 19708 |
| Laurel | Apr 8 | Nov 4 | 209 days | 19956 |
| Lewes | Mar 29 | Nov 14 | 231 days | 19958 |
| Lincoln | Apr 11 | Oct 30 | 200 days | 19960 |
| Little Creek | Apr 4 | Nov 4 | 214 days | 19961 |
| Magnolia | Apr 4 | Nov 4 | 214 days | 19962 |
| Marydel | Apr 4 | Nov 4 | 214 days | 19964 |
| Middletown | Apr 7 | Nov 1 | 209 days | 19709 |
| Milford | Apr 11 | Oct 30 | 200 days | 19963 |
| Millsboro | Apr 4 | Nov 6 | 217 days | 19966 |
| Millville | Mar 29 | Nov 14 | 231 days | 19967 |
| Milton | Apr 4 | Nov 6 | 217 days | 19968 |
| Montchanin | Apr 7 | Nov 4 | 209 days | 19710 |
| Nassau | Mar 29 | Nov 14 | 231 days | 19969 |
| New Castle | Apr 7 | Nov 1 | 209 days | 19720, 19721, 19726 |
| Newark | Apr 7 | Nov 2 | 208 days | 19702, 19711, 19712, 19713 +6 more |
| Ocean View | Mar 29 | Nov 14 | 231 days | 19970 |
| Odessa | Apr 7 | Nov 1 | 209 days | 19730 |
| Port Penn | Apr 7 | Nov 1 | 209 days | 19731 |
| Rehoboth Beach | Mar 29 | Nov 14 | 231 days | 19971 |
| Rockland | Apr 7 | Nov 4 | 209 days | 19732 |
| Saint Georges | Apr 7 | Nov 1 | 209 days | 19733 |
| Seaford | Apr 11 | Oct 30 | 200 days | 19973 |
| Selbyville | Apr 7 | Nov 2 | 209 days | 19975 |
| Smyrna | Apr 4 | Nov 4 | 214 days | 19977 |
| Townsend | Apr 4 | Nov 4 | 214 days | 19734 |
| Viola | Apr 4 | Nov 4 | 214 days | 19979 |
| Wilmington | Apr 7 | Nov 1 | 209 days | 19801, 19802, 19803, 19804 +21 more |
| Winterthur | Apr 7 | Nov 4 | 209 days | 19735 |
| Woodside | Apr 4 | Nov 4 | 214 days | 19980 |
| Yorklyn | Apr 7 | Nov 4 | 209 days | 19736 |
Frequently asked questions
- When is the last frost in Delaware?
- It varies by location. Across Delaware, average last spring frost dates range from March 29 (Lewes) to April 11 (Seaford). Look up your ZIP code for your local date.
- Why do nearby towns have different frost dates?
- Elevation, distance from large bodies of water, and whether a weather station sits in a valley, on a hill, or in a city all change how cold nights get. Each ZIP code is matched to the most representative nearby NOAA station.