Anne Arundel County Climate
Anne Arundel County, Maryland
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
57.6°F
Annual Precip
44.5"
Annual Snowfall
19.3"
Extreme Heat Days
31
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
4,271
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Anne Arundel County
Climate Verdict
Anne Arundel County has a mild, with an average annual temperature of 57.6°F, moderately wet with 44.5 inches of annual precipitation, occasional hot days — 31.366666666666664 per year above 90°F, light snow averaging 19.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 35.9°F. summers are warm — July averages 79.2°F. The 43°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
Anne Arundel County closely matches the Maryland statewide average temperature of 55.9°F.
Climate Profile
About Anne Arundel County Weather
A warm, coastal subtropical climate
Anne Arundel's 57.6°F annual average is warmer than the national median temperature. This humid subtropical climate is heavily influenced by its proximity to the Chesapeake Bay.
Warmer than the state average
The county is warmer than the Maryland state average of 55.9°F. It ranks among the warmer jurisdictions in the state, benefiting from the moderating effects of coastal water.
Typical of the central coast
The county shares a 57.6°F average with Baltimore city but experiences slightly less July heat. Its 44.5 inches of annual rainfall is very close to the state average of 45.7 inches.
Humid summers and moderate winters
July brings an average of 79.2°F and 31 days of extreme heat over 90°F. Winters are relatively mild with 19.3 inches of snow and a January average of 35.9°F.
Focus on cooling and drainage
High-efficiency air conditioning is essential for the month of extreme heat days. Waterfront residents should also prepare for 44.5 inches of rain, which can impact local drainage and tide levels.
Frequently Asked Questions
What is the average temperature in Anne Arundel County?
How much rain does Anne Arundel County get?
Does it snow in Anne Arundel County?
How hot does Anne Arundel County get in summer?
How cold are winters in Anne Arundel County?
Track your own weather in Anne Arundel 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.