Dorchester County Climate
Dorchester County, Maryland
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
58.3°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
43
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8a
Minimum winter temperature range for plant survival
4,375
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Dorchester County
Climate Verdict
Dorchester County has a mild, with an average annual temperature of 58.3°F, occasional hot days — 42.9 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 37.7°F. summers are warm — July averages 79.4°F. The 42°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Dorchester County closely matches the Maryland statewide average temperature of 55.9°F, the county experiences 15.991833333333332 more extreme heat days than the state average.
Climate Profile
About Dorchester County Weather
Warm Eastern Shore climate profile
Dorchester County averages 58.3°F annually, which is significantly warmer than the national median. Its location on the Delmarva Peninsula creates a humid, maritime-influenced environment.
High ranking for state warmth
The county is 2.4 degrees warmer than the Maryland state average of 55.9°F. It is one of the warmest regions in Maryland, particularly during long, humid summers.
More extreme heat than Baltimore
Dorchester faces 43 extreme heat days, far more than the 31 days recorded in Baltimore city or Anne Arundel. Its July average of 79.4°F is characteristic of the warm Eastern Shore.
Intense heat and mild winters
The county endures 43 days of temperatures at or above 90°F each year. Conversely, its winter average of 39.4°F is very mild, with a January average well above freezing at 37.7°F.
Focus on extreme heat safety
With 43 days of extreme heat, reliable air conditioning and hydration are critical for residents. While precipitation and snow data are limited, the mild winter temperatures reduce the need for heavy heating.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.