Maryland weather in December: Statewide normals and every place, NOAA 1991-2020
In December, Maryland's statewide normal high is 47°F and normal low 29°F; normal highs run from 38°F in Frostburg to 52°F in Snow Hill (NOAA 1991-2020 normals).
- Statewide normal high
- 47°FDecember, 1991-2020
- Statewide normal low
- 29°FDecember, 1991-2020
- Statewide normal precipitation
- 3.68 inDecember
- Warmest place
- 52°Fnormal high, Snow Hill
- Coolest place
- 38°Fnormal high, Frostburg
Where is Maryland warmest and wettest in December?
Snow Hill has the warmest December afternoons (52°F) and Frostburg the coolest (38°F). Oakland gets the most precipitation (4.29 in) and Hagerstown the least (2.83 in). The most snow falls in Oakland (21.4 inches).
Statewide, December averaged 43.8°F in 2021, 36.5°F in 2022, 42.5°F in 2023, 37.5°F in 2024, 34.4°F in 2025, against a 1991-2020 normal of 38.1°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Baltimore | 48°F | 30°F | 3.71 | 2.5 |
| Frederick | 47°F | 31°F | 3.97 | – |
| Rockville | 46°F | 31°F | 3.38 | – |
| Hagerstown | 44°F | 30°F | 2.83 | – |
| Annapolis | 47°F | 34°F | 2.98 | – |
| Salisbury | 50°F | 31°F | 3.59 | 0.9 |
| Laurel | 47°F | 31°F | 3.93 | – |
| Beltsville | 47°F | 30°F | 3.48 | 2.3 |
| Cumberland | 43°F | 27°F | 3.05 | 5.4 |
| Oxon Hill | 48°F | 31°F | 3.75 | – |
| Aberdeen | 46°F | 30°F | 3.89 | – |
| Damascus | 44°F | 30°F | 3.89 | 5.1 |
| Glenn Dale | 48°F | 27°F | – | – |
| Stevensville | 46°F | 34°F | 3.80 | – |
| Frostburg | 38°F | 24°F | 3.43 | 13.0 |
| Ocean City | 50°F | 32°F | 3.60 | – |
| Chestertown | 45°F | 31°F | 3.81 | 1.7 |
| Smithsburg | 43°F | 26°F | – | – |
| Emmitsburg | 44°F | 27°F | 3.76 | 4.5 |
| Snow Hill | 52°F | 34°F | 3.92 | 2.5 |
| Solomons | 50°F | 35°F | – | – |
| Oakland | 42°F | 24°F | 4.29 | 21.4 |
| Mechanicsville | 48°F | 29°F | 3.99 | 2.0 |
| Upper Marlboro | 48°F | 29°F | 3.55 | 2.2 |
| Sharpsburg | 45°F | 25°F | 3.46 | – |
| Vienna | 51°F | 31°F | – | – |
| Annapolis Police Barracks | 48°F | 34°F | – | – |
| Assateague | 52°F | 35°F | 4.00 | 0.2 |
| Catoctin Mountain Park | 43°F | 28°F | 3.49 | – |
| Conowingo Dam | 45°F | 31°F | 4.04 | – |
| Cylburn | 46°F | 32°F | – | – |
| Dalecarlia Reservoir | 47°F | 30°F | 3.81 | 0.8 |
| Maryland Science Center Baltimore | 48°F | 35°F | 3.66 | – |
| Millers (4 mi NE) | 44°F | 28°F | 4.04 | 5.6 |
| National Arboretum DC | 49°F | 32°F | 3.67 | 1.3 |
| Patuxent River Naval Air Station | 50°F | 34°F | 3.54 | 1.3 |
| Royal Oak (2 mi SSW) | 49°F | 33°F | 3.94 | 1.8 |
| Savage River Dam | 40°F | 25°F | 2.91 | – |
| Sines Deep Creek | 38°F | 21°F | – | – |
| St Inigoes Webster NOLF | 50°F | 33°F | 3.32 | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.