Dorchester County Climate
Dorchester County, Maryland
Avg Annual Temp
58.3°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
42.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Precipitation data coming soon
Seasonal Overview
National Comparison
Data pending
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 source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.