Allegany County Climate
Allegany County, Maryland
Avg Annual Temp
51.2°F
Annual Precip
42.2"
Annual Snowfall
50.4"
Extreme Heat Days
19.25
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Allegany County Weather
Cooler Appalachian air defines Allegany
With an annual average temperature of 51.2°F, Allegany County is cooler than the national median. This mountain climate experiences a humid continental pattern typical of the Appalachian region.
Well below the Maryland average
The county's 51.2°F average sits significantly below the Maryland state average of 55.9°F. It is one of the coldest jurisdictions in the state due to its higher elevation and western position.
Drier but colder than neighbors
Allegany receives 42.2 inches of rain, which is lower than the Maryland average of 45.7 inches. However, its winter average of 30.9°F makes it much colder than the central and coastal regions of the state.
Snowy winters and mild summers
The county endures 50.4 inches of snow annually and a January average of 28.5°F. Summers remain pleasant with a July average of 72.6°F and only 19 days reaching 90°F or higher.
Prepare for snow and heating
Residents should invest in heavy-duty snow removal equipment and robust home heating systems. The mild 70.7°F summer average means cooling needs are lower than in the rest of Maryland.
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.