Addison County Climate
Addison County, Vermont
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
44.0°F
Annual Precip
43.1"
Annual Snowfall
81.3"
Extreme Heat Days
6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,081
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Addison County
Climate Verdict
Addison County has a cool, averaging 44.0°F annually, moderately wet with 43.1 inches of annual precipitation, rare extreme heat with only 6.266666666666667 days above 90°F annually, heavy winter snowfall averaging 81.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 17.9°F. summers are pleasantly cool with July averaging 68.2°F. Residents experience a substantial 50°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Addison County closely matches the Vermont statewide average temperature of 43.6°F.
Climate Profile
About Addison County Weather
A Classic Northern Climate
Addison County’s average annual temperature of 44.0°F sits roughly 10 degrees below the national median. This identifies it as a cold-temperate zone with distinct seasonal shifts.
Warmer Than the State Average
The county is slightly warmer than the Vermont state average of 43.6°F. It ranks among the warmer half of Vermont's counties due to its position in the Champlain Valley.
Milder Than Its Eastern Neighbors
Addison’s 44.0°F average is warmer than Lamoille’s 41.0°F but trails Chittenden County at 47.0°F. It serves as a middle ground between the cold mountains and the warmer lakefront.
Snowy Winters and Temperate Summers
Winter brings an average of 81.3 inches of snow with January lows dipping to 17.9°F. Summers stay comfortable with a July average of 68.2°F and only 6 days of extreme heat.
Prepare for Ice and Insulation
Homeowners should invest in high-quality insulation to combat the sub-20-degree winter nights. While summers are mild, preparing for 81 inches of snow requires reliable plowing equipment.
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.