Ice Dam Prevention in North Dakota

In North Dakota, local ice dams deadlines run from Sep 15 to Oct 16, with a median around Sep 15 — 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

Bismarck — earliest deadline in the state
Fargo — latest deadline in the state
Minot — near the state median

All North Dakota cities

City	Local deadline	Median first 28°F
Bismarck	Sep 15	Oct 9	View →	Checklist
Grand Forks	Sep 15	Oct 12	View →	Checklist
Minot	Sep 15	Oct 10	View →	Checklist
Fargo	Oct 16	Oct 14	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.