Ranked from NOAA 1991-2020 Climate Normals
Coldest Winters in Maryland
Average daily low in the coldest month, coldest counties first, with the heating degree days beside it. Figures are NOAA 1991-2020 Climate Normals from the weather station nearest each county seat, so they describe a thirty-year average rather than any single year.
Maryland ranked
| # | County | Winter low | Heating degree days | Monthly to own |
|---|---|---|---|---|
| 1 | Garrett County | 17.7°F | 6,562 | $1,810 |
| 2 | Carroll County | 20.8°F | 5,423 | $3,196 |
| 3 | Allegany County | 22.5°F | 5,119 | $1,359 |
| 4 | Prince George's County | 24.7°F | 4,546 | $3,252 |
| 5 | Cecil County | 25.3°F | 4,706 | $2,524 |
| 6 | Harford County | 25.3°F | 4,706 | $2,911 |
| 7 | Washington County | 25.3°F | 4,716 | $2,242 |
| 8 | Howard County | 25.4°F | 4,484 | $4,538 |
| 9 | Frederick County | 26.5°F | 4,275 | $3,450 |
| 10 | Montgomery County | 26.9°F | 4,455 | $4,663 |
| 11 | Kent County | 27.1°F | 4,546 | $2,480 |
| 12 | Charles County | 28.3°F | 4,002 | $3,199 |
| 13 | Caroline County | 28.6°F | 4,070 | $2,226 |
| 14 | Talbot County | 29.3°F | 3,972 | $3,043 |
| 15 | Wicomico County | 29.3°F | 3,764 | $1,978 |
| 16 | Calvert County | 29.5°F | 3,927 | $3,415 |
| 17 | Dorchester County | 29.5°F | 3,927 | $2,087 |
| 18 | Somerset County | 29.5°F | 3,957 | $1,456 |
| 19 | Anne Arundel County | 29.8°F | 4,062 | $3,478 |
| 20 | Queen Anne's County | 29.8°F | 4,062 | $3,396 |
| 21 | Baltimore County | 30.0°F | 3,859 | $2,690 |
| 22 | Baltimore city | 30.0°F | 3,859 | $1,945 |
| 23 | St. Mary's County | 30.1°F | 3,867 | $3,060 |
| 24 | Worcester County | 30.2°F | 3,631 | $2,721 |
Every figure is modelled on the county's own median home with 20% down at 7.03%. Property tax and electricity are county and state specific; homeowners insurance uses the NAIC average premium for that state, which ranges from 0.16% of home value in Hawaii to 1.16% in Oklahoma. Maintenance and water are national estimates. Full methodology.
Nationwide
Coldest Winters across all 3,133 US counties · Every county in Maryland