Carroll County Climate
Carroll County, Maryland
Avg Annual Temp
53.6°F
Annual Precip
47.9"
Annual Snowfall
34.1"
Extreme Heat Days
11.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Carroll County Weather
A classic four-season climate
Carroll County's 53.6°F average aligns closely with the national median. It experiences a temperate humid climate with distinct seasonal transitions.
Cooler than the state average
The county is cooler than the Maryland average of 55.9°F. Its inland position and slightly higher elevation keep it milder in summer and colder in winter than the coast.
Snowier than neighboring Baltimore
With 34.1 inches of snow, Carroll is much snowier than Baltimore city or Anne Arundel. It also receives 47.9 inches of rain, exceeding the state average of 45.7 inches.
Mild summers and snowy winters
The county only sees 12 days of extreme heat over 90°F, making for pleasant summers. However, winters are cold with a January average of 31.6°F and significant precipitation.
Prepare for wet, snowy years
With nearly 48 inches of rain and 34 inches of snow, residents should prioritize drainage and winter tires. The low number of extreme heat days makes this a great area for outdoor summer activities.
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.