Montgomery County Climate
Montgomery County, Maryland
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.1°F
Annual Precip
44.6"
Annual Snowfall
31.4"
Extreme Heat Days
18
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
3,754
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Montgomery County
Climate Verdict
Montgomery County has a mild, with an average annual temperature of 55.1°F, moderately wet with 44.6 inches of annual precipitation, rare extreme heat with only 17.95 days above 90°F annually, moderate snowfall of 31.4 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 33.1°F. summers are warm — July averages 76.5°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
Montgomery County closely matches the Maryland statewide average temperature of 55.9°F.
Climate Profile
About Montgomery County Weather
Temperate with Higher Than Median Temps
Montgomery County averages 55.1°F annually, staying just above the national median temperature. It sees 44.6 inches of precipitation, which is high compared to many western states.
One of Maryland's Cooler Counties
At 55.1°F, Montgomery is cooler than the Maryland state average of 55.9°F. It also receives slightly less precipitation than the state average of 45.7 inches.
Snowier Than Its Neighbors
Montgomery receives 31.4 inches of snow, nearly doubling the 15.9 inches found in neighboring Prince George's County. It is also significantly milder in the summer with only 18 extreme heat days.
Heavy Snow and Mild Summers
Winters are defined by 31.4 inches of snow and a 33.1°F January average. Summer is relatively mild for the region, with July averaging 76.5°F.
Prioritize Winter Preparedness
Invest in a high-quality snow blower and winterize your home for significant snowfall. You will enjoy fewer 90°F days here than in almost any other Maryland county.
Frequently Asked Questions
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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.