Addison County Climate
Addison County, Vermont
Avg Annual Temp
44.0°F
Annual Precip
43.1"
Annual Snowfall
81.3"
Extreme Heat Days
6.266666666666667
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.