Chittenden County Climate
Chittenden County, Vermont
Avg Annual Temp
47.0°F
Annual Precip
39.9"
Annual Snowfall
86.7"
Extreme Heat Days
8.05
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Chittenden County Weather
Vermont’s Warmest Urban Center
Chittenden County averages 47.0°F, which is cool compared to the national median but leads the state in warmth. Its proximity to Lake Champlain helps moderate the extreme cold.
Top Ranked for Heat
Chittenden is the warmest county in Vermont, sitting 3.4 degrees above the state average of 43.6°F. It experiences more heat days than any of its neighboring counties.
Leading the Champlain Valley
At 47.0°F, it is noticeably warmer than Addison County’s 44.0°F. It also receives less snow than the mountainous regions to the east, like Lamoille.
Warmer Summers and Moderate Snow
The county sees 8 days of 90-degree heat, the highest in the state, with July averages reaching 71.7°F. Annual snowfall totals 86.7 inches, which is moderate for this latitude.
Prepare for Humidity and Snow
Unlike most of Vermont, residents here may want central air conditioning to handle the 8 extreme heat days. Winter prep remains vital as January averages still sit at 20.0°F.
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.