National Weather ServiceDelawareWinter Weather AdvisoryArchive to October 1, 2026
Winter Weather Advisories in Delaware
The National Weather Service issued 9 winter weather advisories for Delaware in 2025 and 8 a year on average in 2008-2025; in 2021-2025 it had the 48th most of any state. 2026 through September: 2, 70% below the average of 7 for those months in 2008-2025. New Castle was covered most often (124 times since 2008).
How many winter weather advisories does Delaware get?
Every winter weather advisory that covered part of Delaware. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 2 |
| 2025 | 9 |
| 2024 | 5 |
| 2023 | 0 |
| 2022 | 13 |
| 2021 | 7 |
| 2020 | 3 |
| 2019 | 11 |
| 2018 | 9 |
| 2017 | 7 |
| 2016 | 6 |
| 2015 | 15 |
| 2014 | 11 |
| 2013 | 14 |
| 2012 | 4 |
| 2011 | 12 |
| 2010 | 8 |
| 2009 | 7 |
| 2008 | 7 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Delaware get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Delaware?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| New Castle | 124 | 14 | March 3, 2026 |
| Kent | 84 | 8 | December 14, 2025 |
| Inland Sussex | 77 | 7 | December 14, 2025 |
| Delaware Beaches | 64 | 4 | December 14, 2025 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a winter weather advisory?
A winter weather advisory covers snow, sleet or freezing rain that will be a nuisance and can make roads slippery, below warning amounts. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in Delaware.