Fall foliage in North Dakota

North Dakota’s color is in its river valleys and badlands, with no broad statewide progression. Cottonwood and ash along the Missouri, the Red River and the Sheyenne turn gold in the first half of October; the aspen and ash of the Turtle Mountains and the Pembina Gorge in the northeast run a few days ahead. The badlands around Medora show green ash and cottonwood against the buttes over the same period, and the prairie turns copper alongside. The season is short.

Those are the months when color is present somewhere in North Dakota, from its highest ground to its lowest. Any one location changes over a much shorter period than that.

Why the timing shifts from year to year

Shortening days start the process, so most places in North Dakota change at close to their usual time each year. Within the state, elevation and latitude account for most of the difference: higher and more northern ground generally changes first, and lower, sheltered ground last. Weather has more effect on how strong the color is than on when it appears. Cool nights and sunny days favor the reds, a dry summer mutes them, and a hard freeze or a windstorm can strip a slope in a day. What determines the timing goes through this in detail.

Nearby states

Fall color does not follow state lines. North Dakota borders:

• Minnesota fall foliage
• Montana fall foliage
• South Dakota fall foliage

Timing for a specific place

This page describes a whole state, which is about as precise as a season can be described in words. Conditions at one overlook on one weekend are a narrower question, and that is the one Fallcast answers: an expected period of color for a specific location, with a confidence attached, updated through the season as the trees change. It is coming to iPhone this fall.

Questions, or somewhere in North Dakota you would like covered? Write to fallcastapp@gmail.com.