Delaware weather in December: Statewide normals and every place, NOAA 1991-2020
In December, Delaware's statewide normal high is 48°F and normal low 31°F; normal highs run from 46°F in Wilmington to 50°F in Georgetown (NOAA 1991-2020 normals).
- Statewide normal high
- 48°FDecember, 1991-2020
- Statewide normal low
- 31°FDecember, 1991-2020
- Statewide normal precipitation
- 3.85 inDecember
- Warmest place
- 50°Fnormal high, Georgetown
- Coolest place
- 46°Fnormal high, Wilmington
Where is Delaware warmest and wettest in December?
Georgetown has the warmest December afternoons (50°F) and Wilmington the coolest (46°F). Lewes gets the most precipitation (4.17 in) and Georgetown the least (3.47 in). The most snow falls in Wilmington (2.9 inches).
Statewide, December averaged 44.0°F in 2021, 37.8°F in 2022, 43.5°F in 2023, 38.2°F in 2024, 34.9°F in 2025, against a 1991-2020 normal of 39.5°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Wilmington | 46°F | 30°F | 3.85 | 2.9 |
| Dover | 49°F | 32°F | 3.99 | 2.6 |
| Newark | 47°F | 30°F | 4.04 | – |
| Georgetown | 50°F | 33°F | 3.47 | – |
| Lewes | 50°F | 35°F | 4.17 | 1.0 |
| Greenwood | 48°F | 29°F | 3.78 | 1.8 |
| Wilmington Porter Research | 43°F | 29°F | 4.37 | 0.8 |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.