Frost dates · Vermont
Vermont frost dates,
county by county.
Last spring frost and first fall frost probability data for all 14 counties in Vermont, computed from the NOAA 1991–2020 Climate Normals. Every county page surfaces the full probability table at three temperature thresholds plus crop-specific planting guidance.
Variation across Vermont
15 days separate the earliest and latest counties.
The median last spring frost in Grand Isle County is April 19 — 15 days earlier than Franklin County at May 4. Statewide averages aren't useful planting tools; pick your county below for the data that actually applies to your fields.
By frost timing
Counties sorted by last spring frost.
Latest at top, earliest at bottom. In most states this matches the north-to-south gradient.
- Franklin CountySpring May 4·Fall Oct 10159-day season
- Essex CountySpring May 2·Fall Oct 7158-day season
- Rutland CountySpring May 2·Fall Oct 5156-day season
- Bennington CountySpring May 1·Fall Oct 9161-day season
- Caledonia CountySpring May 1·Fall Oct 13165-day season
- Orange CountySpring May 1·Fall Oct 9161-day season
- Orleans CountySpring May 1·Fall Oct 10162-day season
- Windsor CountySpring Apr 30·Fall Oct 12165-day season
- Lamoille CountySpring Apr 28·Fall Oct 13168-day season
- Addison CountySpring Apr 26·Fall Oct 16173-day season
- Windham CountySpring Apr 25·Fall Oct 16174-day season
- Washington CountySpring Apr 24·Fall Oct 21180-day season
- Chittenden CountySpring Apr 23·Fall Oct 24184-day season
- Grand Isle CountySpring Apr 19·Fall Oct 25189-day season