Carroll County Climate
Carroll County, Maryland
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
53.6°F
Annual Precip
47.9"
Annual Snowfall
34.1"
Extreme Heat Days
12
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,441
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Carroll County
Climate Verdict
Carroll County has a mild, with an average annual temperature of 53.6°F, moderately wet with 47.9 inches of annual precipitation, rare extreme heat with only 11.8 days above 90°F annually, moderate snowfall of 34.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 31.6°F. summers are warm — July averages 74.6°F. The 43°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Carroll County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Carroll County closely matches the Maryland statewide average temperature of 55.9°F, it is somewhat wetter than average for Maryland, the county experiences 15.108166666666666 fewer extreme heat days than the state average.
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
What is the average temperature in Carroll County?
How much rain does Carroll County get?
Does it snow in Carroll County?
How hot does Carroll County get in summer?
How cold are winters in Carroll County?
Track your own weather in Carroll County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.