Ranked from NOAA 1991-2020 Climate Normals
Wettest Counties in Maryland
Total annual precipitation by county, wettest first. Rainfall drives roof and siding wear, basement water, and in much of the country the flood component of the insurance premium. 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 | Annual rainfall | FEMA risk rating | Median home |
|---|---|---|---|---|
| 1 | Garrett County | 57.0" | Very Low | $217,000 |
| 2 | Wicomico County | 48.0" | Relatively Low | $238,900 |
| 3 | Talbot County | 47.6" | Very Low | $398,300 |
| 4 | Worcester County | 47.4" | Relatively Low | $348,100 |
| 5 | Cecil County | 47.1" | Relatively Low | $311,800 |
| 6 | Harford County | 47.1" | Relatively Low | $367,300 |
| 7 | St. Mary's County | 46.3" | Very Low | $390,900 |
| 8 | Kent County | 46.0" | Very Low | $307,100 |
| 9 | Calvert County | 45.3" | Very Low | $440,200 |
| 10 | Dorchester County | 45.3" | Relatively Low | $252,300 |
| 11 | Prince George's County | 45.0" | Relatively Moderate | $404,300 |
| 12 | Howard County | 45.0" | Relatively Low | $576,700 |
| 13 | Anne Arundel County | 44.0" | Relatively Moderate | $450,300 |
| 14 | Queen Anne's County | 44.0" | Very Low | $441,800 |
| 15 | Caroline County | 43.9" | Relatively Low | $272,400 |
| 16 | Baltimore County | 43.7" | Relatively Moderate | $330,000 |
| 17 | Baltimore city | 43.7" | Relatively High | $219,300 |
| 18 | Frederick County | 43.5" | Relatively Low | $437,700 |
| 19 | Somerset County | 43.3" | Relatively Low | $164,300 |
| 20 | Carroll County | 42.1" | Relatively Low | $406,400 |
| 21 | Montgomery County | 41.3" | Relatively Moderate | $615,200 |
| 22 | Charles County | 41.0" | Relatively Low | $402,300 |
| 23 | Allegany County | 39.2" | Relatively Low | $149,200 |
| 24 | Washington County | 35.6" | Relatively Low | $275,900 |
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
Wettest Counties across all 3,133 US counties · Every county in Maryland