Montgomery County Climate
Montgomery County, Maryland
Avg Annual Temp
55.1°F
Annual Precip
44.6"
Annual Snowfall
31.4"
Extreme Heat Days
17.95
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.