Ice Dam Prevention in Tennessee

In Tennessee, local ice dams deadlines run from Nov 15 to Dec 16, with a median around Dec 16 — a spread of weeks that a single statewide date would miss. Find your city below; each links to local freeze odds, a live 10-day outlook, and a checklist.

Jump to a city

Notable cities

Johnson City — earliest deadline in the state
Brentwood — latest deadline in the state
Knoxville — near the state median

All Tennessee cities

City	Local deadline	Median first 28°F
Johnson City	Nov 15	Nov 1	View →	Checklist
Kingsport	Nov 15	Nov 6	View →	Checklist
Nashville	Dec 16	Nov 9	View →	Checklist
Knoxville	Dec 16	Nov 6	View →	Checklist
Chattanooga	Dec 16	Nov 17	View →	Checklist
Brentwood	Dec 16	Nov 3	View →	Checklist

Back to the national Ice Dam Prevention guide, or see the methodology.

Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.